Tag Archives: Diamonds

Strange Hexagonal Diamonds Crashed To Earth From Ancient Dwarf Planet

Scientists have discovered how a rare form of diamond is created in space. Found in four meteorites in north-west Africa, the strange hexagonal diamonds do not naturally occur on Earth. Now, we may know where they come from. 

Billions of years ago, there was a dwarf planet in the inner Solar System that had carbon in its mantle. After a catastrophic collision with a large asteroid, that carbon was compressed into lonsdaleite, where carbon atoms are organized in a hexagonal lattice instead of the cubic structure of regular diamonds.

These lonsdaleite crystals got trapped inside ureilite meteorites, a rare form of stony space rocks that are rich in carbon, usually graphite and nanodiamond. In a new paper in the Proceedings of the National Academy of Sciences, the researchers established a connection between all these different carbon-based minerals that suggest the diamonds formed from the mantle of a long-dead dwarf planet.

They posit the graphite turned into diamond and lonsdaleite. Graphite is made of layers of carbon organized in a hexagonal grid. The team believes that the impact created a supercritical fluid made of carbon, hydrogen, oxygen, and sulfur. This interacted with graphite at high temperatures and moderate pressures which allowed the carbon to retain the hexagonal distribution of graphite, but in a 3D space, rather than in 2D layers.

“Later, lonsdaleite was partially replaced by diamond as the environment cooled and the pressure decreased,” explained lead author Professor Andy Tomkins from Monash University in a statement.

The team used advanced electron microscopy techniques to study the meteorites slice by slice, allowing them to create a series of snapshots telling the story of how lonsdaleite formed and how it was partially replaced by diamonds and graphite.

“We have also discovered the largest lonsdaleite crystals known to date that are up to a micron in size—much, much thinner than a human hair,” noted senior author Professor Dougal McCulloch from RMIT University.

Lonsdaleite is believed to be much harder than diamonds due to its structure but it has been difficult to test this until now as naturally occurring examples are very small. However, as McCulloch said, the four African meteorites featured crystals up to a micrometer, 1,000 bigger than any found before.

“Nature has thus provided us with a process to try and replicate in industry. We think that lonsdaleite could be used to make tiny, ultra-hard machine parts if we can develop an industrial process that promotes replacement of pre-shaped graphite parts by lonsdaleite,” Tomkins explained.

Lonsdaleite was named in honor of British pioneering crystallographer Kathleen Lonsdale. Together with the biochemist Marjory Stephenson, they were the first two women elected as a Fellow of the Royal Society in 1945.

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Dwarf planet collision may have sent strange diamonds to Earth

Strange hexagonal diamonds may have been jettisoned into space when a dwarf planet collided with a large asteroid around 4.5 billion years ago. 

New research identified the hexagonal diamonds, also called lonsdaleite,  in a rare class of meteorites that might come from the mantle of a dwarf planet. Like graphite, charcoal and diamond, lonsdaleite is a particular structural form of carbon. Where diamond’s carbon atoms are arranged in a cubic shape, the carbon atoms in lonsdaleite are arranged in hexagons.

“This study proves categorically that lonsdaleite exists in nature,” Dougal McCulloch, a microscopist at RMIT University in Australia, said in a statement. “We have also discovered the largest lonsdaleite crystals known to date that are up to a micron in size  —  much, much thinner than a human hair.”

Related: How many meteorites hit Earth every year?

Lonsdaleite was first discovered in the Canyon Diablo meteorite in 1967 and was named after British crystallographer Dame Kathleen Lonsdale. The new research predicts that the hexagonal shape of lonsdaleite makes it harder than regular diamonds with a cubic structure, which might pen new manufacturing techniques to make ultra-hard materials.

The researchers studied lonsdaleite in ureilite meteorites, a rare class of space rocks that scientists think may contain material from the mantle of dwarf planets. The team analyzed slices of these meteorites under the microscope to identify the lonsdaleite and predict its origins, and also studied regularly shaped diamonds found in the rock. 

“There’s strong evidence that there’s a newly discovered formation process for the lonsdaleite and regular diamond, which is like a supercritical chemical vapor deposition process that has taken place in these space rocks, probably in the dwarf planet shortly after a catastrophic collision,” McCulloch said. “Chemical vapor deposition is one of the ways that people make diamonds in the lab, essentially by growing them in a specialized chamber.”

Co-authors Andy Tomkins (left) and Alan Salek (right) holding one of the meteorite samples used in the research. (Image credit: RMIT University)

The scientists think that lonsdaleite in the meteorites formed from a supercritical liquid at high temperatures and under increased pressures. This extreme environment allowed the lonsdaleite to retain the shape and texture of graphite. Eventually, as the environment cooled and the pressure reduced lonsdaleite was partially replaced by diamond. 

The team thinks that industry could mimic the process to produce the unusual mineral.

“Nature has thus provided us with a process to try and replicate in industry,” Andy Tomkins, team leader and a geologist at Monash University in Australia, said in the same statement. “We think that lonsdaleite could be used to make tiny, ultra-hard machine parts if we can develop an industrial process that promotes the replacement of pre-shaped graphite parts by lonsdaleite.”

The team’s research was published Monday (Sept. 12) in the Proceedings of the National Academy of Sciences.

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It’s raining diamonds across the universe, research suggests

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Paris (AFP) – It could be raining diamonds on planets throughout the universe, scientists suggested Friday, after using common plastic to recreate the strange precipitation believed to form deep inside Uranus and Neptune.

Scientists had previously theorised that extremely high pressure and temperatures turn hydrogen and carbon into solid diamonds thousands of kilometres below the surface of the ice giants.

Now new research, published in Science Advances, inserted oxygen into the mix, finding that “diamond rain” could be more common than thought.

Ice giants like Neptune and Uranus are thought to be the most common form of planet outside our Solar System, which means diamond rain could be occurring across the universe.

Dominik Kraus, a physicist at Germany’s HZDR research lab and one of the study’s authors, said that diamond precipitation was quite different to rain on Earth.

Under the surface of the planets is believed to be a “hot, dense liquid”, where the diamonds form and slowly sink down to the rocky, potentially Earth-size cores more than 10,000 kilometres (6,200 miles) below, he said.

There fallen diamonds could form vast layers that span “hundreds of kilometres or even more”, Kraus told AFP.

While these diamonds might not be shiny and cut like a “a nice gem on a ring”, he said they were formed via similar forces as on Earth.

Aiming to replicate the process, the research team found the necessary mix of carbon, hydrogen and oxygen in a readily available source — PET plastic, which is used for everyday food packaging and bottles.

Kraus said that while the researchers used very clean PET plastic, “in principle the experiment should work with Coca-Cola bottles”.

The team then turned a high-powered optical laser on the plastic at the SLAC National Accelerator Laboratory in California.

“Very, very short X-ray flashes of incredible brightness” allowed them to watch the process of nanodiamonds — tiny diamonds too small to see with the naked eye — as they formed, Kraus said.

“The oxygen that is present in large amounts on those planets really helps suck away the hydrogen atoms from the carbon, so it’s actually easier for those diamonds to form,” he added.

– New way to make nanodiamonds? –

The experiment could point towards a new way to produce nanodiamonds, which have a wide and increasing range of applications including drug delivery, medical censors, non-invasive surgery and quantum electronics.

“The way nanodiamonds are currently made is by taking a bunch of carbon or diamond and blowing it up with explosives,” said SLAC scientist and study co-author Benjamin Ofori-Okai.

“Laser production could offer a cleaner and more easily controlled method to produce nanodiamonds,” he added.

The diamond rain research remains hypothetical because little is known about Uranus and Neptune, the most distant planets in our Solar System.

Only one spacecraft — NASA’s Voyager 2 in the 1980s — has flown past the two ice giants, and the data it sent back is still being used in research.

But a NASA group has outlined a potential new mission to the planets, possibly launching next decade.

“That would be fantastic,” Kraus said.

He said he is greatly looking forward to more data — even if it takes a decade or two.

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Dustin Diamond’s abandoned, trashed house finally sells after 2 years

Six months before Dustin Diamond passed away in February 2021, he was forced to put his longtime home in Port Washington, Wisconsin up for sale after a bank threatened foreclosure for unpaid dues.

More than two years later, on May 27, 2022, it finally sold for $276,400 to a real estate developer with plans of tearing down the structure and turning it into some type of commercial property, The Post can report.

As to the exact plans of the land, that remains unknown. The Post has reached out for comment.

Best known for his role as Screech Powers in “Saved By the Bell,” Diamond owed $269,326 to Wells Fargo, records show. He had initially put a $68,000 down payment on the home back in 2003 when he purchased the four-bedroom property for $340,000.

Dustin Diamond’s longtime, and abandoned, home has sold after two years on the market.
Mesoloras Group, Golden Oaks Realty; Getty Images; TikTok
The property is made up of four bedrooms and four bathrooms.
Mesoloras Group, Golden Oaks Realty
The home spans 3,000 square feet.
Mesoloras Group, Golden Oaks Realty
One of four bedrooms.
TikTok; @ashwill88
One of four bathrooms.
TikTok; @ashwill88

Before his death, Diamond revealed in an interview with TMZ he didn’t understand how he owed such a huge sum and that a busted water main had flooded his basement and made him lose 30 years of memories.

“Foreclosure means nothing when a house is destroyed … with my items I’ve lost,” Diamond said at the time. “It now feels like Wells Fargo is trying to kick me when I’m down.”

On Feb. 1, 2021, Diamond lost his battle to extensive stage four colon cancer only a month after his diagnosis. He was 44.

The home, which spans 3,000 square feet and is situated on half an acre, has since glided on and off the market until its recent sale. Only exterior photos of the home were included in the previous listing with the description: “great rehab project.”

The office.
TikTok; @ashwill88
The expansive terrace.
Mesoloras Group, Golden Oaks Realty
The house sits on half an acre of land.
Mesoloras Group, Golden Oaks Realty

“Property has been vacant for over a year,” the listing description continues. “Great for investor or handyman owner.”

Now, for the first time since his death, two viral videos take viewers inside the home, which paint a very shocking picture of Diamond’s life.

Described as a hoarder’s den, extensive clutter throughout the video is shown in the office of the home — and in one of the bedrooms and bathrooms of the property.

Clothes are scattered, several bottles collected, medicine and pill bottles are seen throughout on the bathroom sink and tub, and what appears to be feces on the bathroom floor.

It’s unclear if the abandoned house was vandalized or even faced squatters in the time since his passing, or if this was the state Diamond left the home in.

“Honestly this is exactly how I expected Screech to live after high school,” one user joked.

“That’s so sad, is it really his? Did he really live like that?” another user questioned.

“He was our neighbor in Port Washington but he rarely left his home,” another user claimed in the comment section of the video.

According to Ashley — who gave a tour of the home —  the video was recorded back when the house was still on the market. Her realtor had taken her inside to view the property.

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Top producer Russia thwarts move to redefine ‘conflict diamonds’

JOHANNESBURG, June 16 (Reuters) – Russia, supported by Belarus, Central African Republic, Kyrgyzstan and Mali, has torpedoed a Western-backed proposal to discuss whether its diamonds are funding war ahead of an international conflict diamond meeting in Botswana, letters seen by Reuters show.

The rift in the Kimberley Process (KP), which certifies rough diamond exports, risks paralyzing the body which makes decisions by consensus.

The letters, which have not been previously reported, show a dispute over a proposal by Ukraine, the European Union, Australia, Britain, Canada, and the United States to discuss Russia’s invasion of Ukraine and whether to broaden the KP’s definition of conflict diamonds to include state actors at its June 20-24 meeting in Botswana.

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The United States and Britain have already placed sanctions on Russia’s Alrosa (ALRS.MM), the world’s largest producer of rough diamonds, which accounted for around 30% of global output last year, and is partly state-owned. read more

A draft agenda dated May 20 included an hour-long slot to discuss the issue, but the item was removed after objections from Russia, Belarus, Central African Republic (CAR), Kyrgyzstan, and Mali.

“We find ourselves at an impasse,” Botswana’s KP chair Jacob Thamage told participants – who include 85 nations, industry representatives, and civil society organisations – in a June 9 letter urging them to find common ground.

The KP defines conflict diamonds as gems used to fund rebel movements seeking to undermine legitimate governments.

Officially labelling Russian diamonds “conflict diamonds” would require widening the definition. The KP Civil Society Coalition has been calling for such a change for years, along with some KP member countries.

The certification scheme, designed to eliminate the trade in so-called “blood diamonds”, was set up in 2003 in the wake of devastating civil wars in Angola, Sierra Leone, and Liberia, which were largely financed by the illicit diamond trade.

Russia’s KP delegate said in a May 20 letter that the situation in Ukraine has “no implications” for the Kimberley Process and is “absolutely beyond the scope” of its certification scheme.

Belarus, CAR, Kyrgyzstan and Mali all similarly argued that the proposal was “political” or outside the scope of the KP, and that its inclusion on the agenda was inappropriate. All four countries have backed Russia in recent United Nations General Assembly votes.

War-torn CAR is the only country in the world currently under a partial KP embargo for rough diamond exports. Russia, with which it has close trade and security ties, has worked to lift those restrictions.

Mali also has close ties with Russia. Hundreds of Russian military contractors have deployed there since the beginning of this year to help the government fight insurgents.

“If the Kimberley Process is to be a credible guarantor that diamonds exported with a KP certificate are actually conflict-free, it cannot refuse to consider the valid questions that have been raised about whether rough diamonds exported by Russia are financing its invasion of Ukraine,” Canada’s Ioanna Sahas Martin wrote to the KP chair earlier this month.

In a letter to the chair on Monday, Ukraine KP representative Andrii Tkalenko proposed two amendments to the certification scheme: To widen the definition to include government actors, and to allow KP countries, by a majority vote, to expel a country that infringes on another KP member’s sovereignty.

Britain, the European Union and the United States also said Russia should step down from the KP committees it currently chairs. read more

“Inaction would undermine the credibility and integrity of the Kimberley Process not only as a conflict prevention mechanism but also as a trade regulation mechanism,” the European Commission’s Marika Lautso-Mousnier said in a letter.

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Reporting by Helen Reid
Editing by Amran Abocar, Sandra Maler and Mark Potter

Our Standards: The Thomson Reuters Trust Principles.

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Remember when Marilyn Monroe declared diamonds are a girl’s best friend?

Written by Megan C. Hills, CNN

Delving into the archives of pop culture history, “Remember When?” is a series offering a nostalgic look at the celebrity outfits that defined their eras.

Watch CNN’s Original Series “Reframed: Marilyn Monroe” Sundays at 9 p.m. ET

Remember when showgirl Lorelei Lee left her fiancé dumbstruck as she emerged onstage in a pink satin gown, dripping in diamonds, in “Gentlemen Prefer Blondes”? Lee, played by Marilyn Monroe, then launches into a musical number where she croons “diamonds are a girl’s best friend” — a scene widely imitated in the decades since, from Madonna’s “Material Girl” video to Margot Robbie in “Birds of Prey.”

Equally unforgettable was Monroe’s strapless dress. Figure-hugging, paired with matching gloves and cinched with a giant pink and black bow, the look became one of Hollywood’s most iconic outfits after the film’s release in 1953.

But the outfit was, in fact, a last-minute alternative. The original — and far more revealing — costume was ditched because of a scandal involving nude photographs.

The pink satin gown has been widely imitated since it’s creation in the early 1950s. Credit: Allstar Picture Library Ltd./Alamy

Four years earlier Monroe, then an unknown jobbing actress, had posed naked for a photo shoot, earning just $50 for a series of images that would later feature in a calendar. Shot by pin-up photographer Tom Kelley, the photos showed the actress stretched artfully across red velvet sheets with her face tilted toward the camera, arms extended and toes pointed, creating beautiful lines.

In the four-part CNN docuseries “Reframed: Marilyn Monroe,” Monroe says she was assured by Kelley that nobody would recognize her. However, there was no mistaking her coiffed blonde curls and signature red lip in the smoldering photos.

By the time the calendar emerged in 1952, Monroe’s Hollywood profile had started to blossom. She was soon identified as the nude model, sparking backlash in conservative 1950s America and casting unflattering attention on the rising star. But Monroe overcame the incident and even gained sympathy through her unflinching honesty.

Hear Marilyn’s response when confronted about a nude photoshoot

“A few years ago, when I had no money for food or rent, a photographer I knew asked me to pose nude for an art calendar,” she told reporter Aline Mosby at United Press International.

Movie studio 20th Century Fox, which would release “Gentlemen Prefer Blondes” the next year, asked her to deny it was her. But she refused, explaining to Mosby: “Oh, the calendar’s hanging in all garages all over town. Why deny it? You can get one any place. Besides, I’m not ashamed of it. I’ve done nothing wrong.”

By owning the photos, she was able to control the narrative — and her public image — in the face of those trying to shame her.

“The nude calendar scandal really put her in the vanguard of the sexual revolution,” American literature professor Sarah Churchwell says in the new docuseries.

Last-minute controversy

Costume designer William “Billy” Travilla, who worked with Monroe on 11 movies including “Gentlemen Prefer Blondes,” later told cable network A&E that the photos sent the studio “wild.” Executives feared the images could ruin Monroe’s career and that the movie’s investors might pull out.

Initially, Travilla had been tasked with creating the “sexiest, most exciting, almost naked lady on the screen” — a very different look to the now-iconic satin pink gown.

Madonna referenced the ensemble in her 1985 music video for “Material Girl.” Credit: Alamy

“The costume was fishnet hose over her nude body,” he told A&E. “The breasts and the hipline (were) covered with diamonds put together by a jeweler. And just as we’re ready to shoot the number — good lord, the thing goes wrong. (A reprint of) Marilyn Monroe’s nude calendar hits the market.”

While Monroe was never filmed wearing the original outfit, rare test photographs of her wearing it do exist. Travilla said he had been instructed to “throw the costume out” by producers who feared they “might lose all the box office for the film.” Travilla then designed the pink gown, or a “very covered dress,” as a safer alternative.

The original sketch for Monroe’s iconic look designed by Travilla. Credit: William Travilla/Public Domain

However, the studio’s worries over the nude photographs were allayed when the film brought in $5.3 million at the box office, catapulting Monroe to full-blown stardom.

Another film starring Monroe, “How to Marry a Millionaire,” was released that same year, raking in another $8 million. As author Aubrey Solomon wrote in his history of 20th Century Fox, “In 1953, Fox’s two greatest assets were CinemaScope and Marilyn Monroe, in that order.” (Monroe, ironically, was only paid $500 a week for “Gentlemen Prefer Blondes,” she revealed in her final interview with Life Magazine in 1962, while co-star Jane Russell earned $200,000.)

Subverting ‘dumb blonde’ clichés

While it was only second choice, the pink dress has become a pop culture phenomenon, selling for $310,000 at a 2010 auction of Hollywood memorabilia.

Celebrities have also paid homage to the scene-stealing outfit and song. Some have emphasized the number’s obvious allusions to materialism, such as Madonna’s 1985 video for “Material Girl,” while others have turned it into an anthem for female empowerment, as Megan Thee Stallion and Normani did on their song “Diamonds.”

Normani wore a tighter, more revealing version of the floor-length gown. Credit: Megan Thee Stallion/Normani/Atlantic Records

Singers Ariana Grande, Camilla Cabello and Kylie Minogue have all channeled the gown for various performances, while James Franco even wore a version of it as co-host of the 2011 Oscars.

And movies like “Birds of Prey” (2020) and “Moulin Rouge” (2001) have offered darker references to the scene, with female protagonists struggling to secure their place in patriarchal societies. In “Birds of Prey,” the gown is reimagined as a jumpsuit worn by Harley Quinn (Margot Robbie) as she hallucinates an eerie version of the famous scene during a violent interrogation with crime lord Roman Sionis (Ewan McGregor). Sionis vastly underestimates Quinn as a “dumb blonde,” which proves to be his eventual undoing.

In 2011, Franco wore his own iteration while co-hosting the Oscars. Credit: Gary Hershorn/Reuters/Alamy

Shrewdly navigating her career, Monroe herself was anything but a “dumb blonde” — as she demonstrated with her handling of the nude photo scandal. In “Reframed: Marilyn Monroe,” Churchwell points to an unscripted line that Monroe came up with for her character, Lorelei Lee, and insisted on using: “I can be smart when it’s important, but most men don’t like it.”

The four-part docuseries “Reframed Marilyn Monroe,” narrated by Jessica Chastain, airs on CNN on Sunday, January 16 at 9PM ET.

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Made-from-CO2 concrete, lululemons and diamonds spark investor excitement

Oct 4 (Reuters) – What do diamonds, sunglasses, high-end lululemon sportswear and concrete have to do with climate change?

They can all be made using carbon dioxide (CO2), locking up the planet warming gas. And tech startups behind these transformations are grabbing investor attention.

Some use bacteria. Some use proteins. Some use chemical processes to speed natural reactions. Most pull apart the carbon and the oxygen in CO2 to create another chemical that is used to make consumers goods.

Companies in the area raised over $800 million so far this year, more than tripling from 2020, according to a Reuters review of data from PitchBook, Circular Carbon Network, Cleantech Group and Climate Tech VC.

Reuters Graphics

“I don’t want to call it a green tax, but our consumers who really do care … have demonstrated that they’re willing to pay a bit of a premium,” said Ryan Shearman, chief executiveof Aether Diamonds, which grows diamonds in the lab using captured CO2.
On the opposite end of the glamour spectrum, the concrete industry, green also is good for marketing, said Robert Niven, CEO of CarbonCure Technologies, which makes technology that injects CO2 into fresh concrete, and strengthens it by locking in the carbon.

“About 90% of our uptake has been from independent concrete producers large and small that are just looking for that competitive edge.”

The world needs to capture and store 10 billion tonnes of CO2 annually by midcentury to slow climate change, according to United Nations estimates, a scale the companies can only dream of, when current carbon capture pilots often are at scales of hundreds and thousands of tonnes.

Humans produce greenhouse gases that are the equivalent of around 50 billion tonnes of CO2 each year, and governments will gather in Scotland in late October and November for a U.N. climate conference on cutting emissions.

All fossil-based products that could use recycled CO2 instead account for some 6.8 billion tonnes of emissions, according to a Columbia University report in May, although lead author Amar Bhardwaj said trying to swap out all of that “would be a misuse of CO2 recycling,” since there are cheaper ways to reduce carbon emissions.

Nicholas Flanders, co-founder of Twelve, which uses chemical processes to reuse CO2, says recycling is better than storing captured CO2 underground. “We’re developing a technology that can go toe to toe with fossil fuels” without additional financial incentives to remove carbon.

That is because many consumers are attracted by “green” labels.

lululemon athletica inc (LULU.O) says it has created a polyester yarn from carbon emissions with LanzaTech that will be used for future products. LanzaTech, which has raised the most funds of companies in the space, according to Reuters’ review, creates ethanol using bacteria. Ethanol is turned into ethylene which is used to make everything from plastic bottles to polyester.

CEO Jennifer Holmgren said LanzaTech’s ethanol is more expensive than corn based ethanol, but customers looking to source greener products are buying.

The biggest investment in the space this year, more than $350 million, was into Houston-based Solugen, which feeds CO2 and other ingredients to enzymes that make chemicals for stronger cement, water pipe coating and other products.

Its products are already cheaper than those made from fossil fuels, said CEO Gaurab Chakrabarti. Still, it is not sourcing CO2 captured from factory emissions or from the air, which Chakrabarti described as “an option.”

Capturing CO2 is a less enticing prospect for many investors, who think the government should fund such expensive, high risk projects.

However, Nicholas Moore Eisenberger, managing partner at Pure Energy Partners, has invested in direct air capture firm Global Thermostat and sees opportunity in necessity and believes once the projects scale up, they will be cheaper.

“The science tells us that we have under a decade to start to bend the curve on climate, and that is now within the investment time frame of most venture and private equity investors,” said Eisenberger.

Reporting By Jane Lanhee Lee and Nia Williams; editing by Peter Henderson and Marguerita Choy

Our Standards: The Thomson Reuters Trust Principles.

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UK: Con woman stole diamonds by swapping them for pebbles

A British court has heard how a woman allegedly pretended to be a gem expert and swapped diamonds worth 4.2 million pounds ($5.7 million) for pebbles using “sleight of hand” at a luxury London jewelers.

Prosecutors said Tuesday that Lulu Lakatos, 60, posed as a gem expert and went to jewelry shop Boodles in London’s tony Mayfair area in March 2016, allegedly to value seven diamonds on behalf of a group of wealthy Russian buyers.

The diamonds, which included a 20-carat heart-shaped diamond valued at more than 2.2 million pounds,- were to be placed in a locked bag and held in the jeweler’s vault until payment was transferred. But when Boodles’ own diamond expert became suspicious and opened the bag the next day, she found seven small pebbles.

Prosecutor Philip Stott said the diamonds had been “stolen by the defendant by sleight of hand.”

MAN SHOT DEAD, 3 PEOPLE STABBED NEAR PRESCHOOL IN FRANCE: REPORT

“The conspiracy in which she is alleged to have played an integral and central part was one of the highest possible sophistication, planning, risk and reward,” he told Southwark Crown Court in London.

Lakatos, who was born in Romania but lived in France, denies any wrongdoing. She is charged with conspiracy to steal.

Nicholas Wainwright, chairman of Boodles, one of Britain’s top luxury jewelry brands, said in a statement that he had been approached by an Israeli buyer who wanted to invest in high-value diamonds in the weeks before the theft. He agreed to the sale of the seven diamonds following a meeting in a Monaco hotel.

Wainwright met with Lakatos in his shop’s basement, along with his own diamond expert Emma Barton. As soon as Wainwright left the room to take a call from the alleged buyer, Lakatos put the padlocked purse containing the gems in her own handbag, Barton told the jury.

Barton said she protested, but Stott alleged that Lakatos swapped the purse with an identical locked bag and placed that back on the table in a matter of seconds.

Prosecutors said Lakatos then worked with accomplices to make their getaway to France in a rented car.

Two men have already pleaded guilty to conspiracy to steal over the heist.

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Barton said she discovered “seven garden pebbles” when she opened the purse the next evening.

Lakatos was arrested in France on a European arrest warrant last September and extradited to the U.K.

The trial is expected to last several more days.

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Geology: Ancient diamonds reveal Earth was ready for life’s ‘explosion’ 2.7 BILLION years ago 

Earth’s atmosphere was primed for an ‘explosion’ in the diversity of life as early as 2.7 billion years ago, a study of ancient diamonds has revealed.

The atmospheric composition of volatile gases — such as hydrogen, nitrogen, neon, and carbon-bearing species — reflects that of those found in the Earth’s mantle.

This is because volatiles in the atmosphere bubble up from inside the planet, reaching the Earth’s surface by means of events like volcanic eruptions.  

Acting like time capsules, diamonds can hold a record of the volatile composition of the mantle — and, by extension, the atmosphere — at the time that they formed.

In this way, researchers from the University of Lorraine, France, showed that the atmosphere during the ‘Neoarchean’ period had a similar volatile makeup as today. 

This means that the Earth’s atmosphere back then was also rich in those volatiles — like nitrogen and carbon — which are necessary to support life.

Earth’s atmosphere was primed for an ‘explosion’ in the diversity of life as early as 2.7 billion years ago, a study of ancient diamonds — like the one pictured — has revealed

VOLATILES AND THE HUNT FOR ALIEN LIFE 

Life depends on certain volatiles — meaning such can inform the hunt for life on other worlds. 

In our solar system, for example, both Earth and Venus are volatile-rich (even if the latter is not exactly what we would consider to be habitable!)

The moon and Mars, on the other hand, long ago lost most of their volatiles to space.

When hunting for exoplanets — those in other solar systems — astrophysicists often look for volatiles to determine if newly-found worlds might be able to support life.

‘Studying the composition of the Earth’s modern mantle is relatively simple,’ said paper author and University of Lorraine geochemist Michael Broadly.

‘On average the mantle layer begins around 30 kilometres [18.6 miles] below the Earth’s surface, and so we can collect samples thrown up by volcanoes and study the fluids and gases trapped inside,’ he explained.

‘However, the constant churning of the Earth’s crust via plate tectonics means that older samples have mostly been destroyed. Diamonds however, are comparatively indestructible, they’re ideal time capsules.’

‘We managed to study diamonds trapped in 2.7 billion year old highly preserved rock from Wawa, on Lake Superior in Canada.’

‘This means that the diamonds are at least as old as the rocks they are found in — probably older. It’s difficult to date diamonds, so this gave us a lucky opportunity to be sure of the minimum age.’

‘These diamonds are incredibly rare, and are not like the beautiful gems we think of when we think of diamonds.’

‘We heated them to over 2,000°C [3,632°F] to transform them into graphite, which then released tiny quantities of gas for measurement.’ 

Measuring the isotopes of argon, helium and neon in these gases, the team found they were present in similar proportions to those found in the upper mantle today — meaning Earth’s volatile content has likely been stable since the diamonds formed.

‘We have no evidence of a significant change since these diamonds were formed 2.7 billion years ago,’ said Dr Broadley.

‘This was a surprising result. It means the volatile-rich environment we see around us today is not a recent development, so providing the right conditions for life to develop,’ he continued.

‘Our work shows that these conditions were present at least 2.7 billion years ago, but the diamonds we use may be much older, so it’s likely that these conditions were set well before our 2.7 billion year threshold.’

The atmospheric composition of volatile gases reflects that of those found in the Earth’s mantle. This is because volatiles in the atmosphere bubble up from inside the planet, reaching the Earth’s surface by means of events like volcanic eruptions. Acting like time capsules, diamonds can hold a record of the volatile composition of the mantle — and, by extension, the atmosphere — at the time that they formed

‘Diamonds are unique samples, as they lock in compositions during their formation,’ commented Suzette Timmerman, a geochemist from the University of Alberta, Canada, who was not involved in the present study.

‘The Wawa fibrous diamonds specifically were a great selection to study — being more than 2.7 billion years old — and they provide important clues into the volatile composition in this period, the Neoarchean.’ 

‘It is interesting that the upper mantle already appears degassed more than 2.7 billion years ago. This work is an important step towards understanding the mantle and atmosphere in the first half of Earth’s history.’

The full findings of the study were presented at the 2021 Goldschmidt Conference, which is being held virtually this year from July 4–9.  

‘We managed to study diamonds trapped in 2.7 billion year old highly preserved rock from Wawa, on Lake Superior in Canada,’ said University of Lorraine geochemist Michael Broadly

LIFE ON EARTH MAY HAVE STARTED THANKS TO A MODIFIED VERSION OF MODERN-DAY RNA

Life on Earth may have started thanks to a modified version of modern-day DNA’s sister molecule, scientists believe.

DNA is the backbone of life and almost all of our planet depends on it but, on primordial Earth, a primitive version of its lesser-known sister – RNA – was the focal point for evolution, experts say.

RNA is structurally similar to DNA, except one of the four fundamental pieces, thymine, is substituted for uracil. 

This changes the shape and structure of the molecule and researchers have long believed this chemical was vital to the development of Earth’s first lifeforms. 

An accidental discovery by Harvard academics published in December 2018 found that a slightly different version of RNA may have been the key ingredient allowing life on Earth to blossom.   

Scientists claim that a chemical called inosine may have been present in place of guanine, allowing for life to develop. 

This slight change to the bases, known as a nucleotides, may provide the first known proof of the ‘RNA World Hypothesis’ – a theory which claims RNA was integral to primitive lifeforms – they say.

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Lab-made hexagonal diamonds are stronger than the real thing

Diamonds may be the strongest known natural material, but researchers have just created some stiff competition.

By firing a dime-sized graphite disk at a wall at 15,000 mph (24,100 km/h), scientists momentarily created a hexagonal diamond that is both stiffer and stronger than the natural, cubic kind. 

Hexagonal diamonds, also known as Lonsdaleite diamonds, are a special type of diamond with carbon atoms arranged in a hexagonal pattern. Formed when graphite is exposed to extreme heat and stress, such as at meteor impact sites, the rare material has long been theorized to be stronger than ordinary cubic diamonds. 

However, as the hexagonal diamonds found in impact craters contain too many impurities, scientists have never accurately measured their properties. 

Related content: Sinister sparkle gallery: 13 mysterious & cursed gemstones

Now, researchers have not only forged the hexagonal diamonds but also measured their stiffness — the ability to resist changing shape when squashed or stretched — with a combination of sound waves and laser light.

“Diamond is a very unique material,” study co-author Yogendra Gupta, director of the Washington State University Institute for Shock Physics, said in a statement. “It is not only the strongest — it has beautiful optical properties and a very high thermal conductivity. Now we have made the hexagonal form of diamond, produced under shock compression experiments, that is significantly stiffer and stronger than regular gem diamonds.”

Cubic diamonds usually form more than 90 miles (150 kilometers) beneath Earth’s surface, under extreme pressures many times greater than the crushing depths of the deep ocean, and temperatures beyond 2,732 degrees Fahrenheit (1,500 degrees Celsius). But to form hexagonal diamonds, the researchers emulated the high-energy impact of a meteor strike, using gunpowder and compressed air to launch the graphite disks at incredible speeds. As the disks slammed into a wall, the shockwaves of the impact rapidly transformed the disks into hexagonal diamonds.

To measure the diamonds’ strength and stiffness in the fraction of a second before the minerals were smashed to smithereens, the researchers emitted a  sound wave and measured how quickly it traveled through the hexagonal diamonds with a laser.  (The sound waves cause the diamond density to fluctuate as it moves through, which affects the path length of the laser beam.) The stiffer a material is, the faster sound moves through it. 

It’s difficult to tell if the hexagonal diamonds are harder than the average diamond. Hardness is a measure of how difficult it is to scratch a material’s surface, and the hexagonal diamonds didn’t exist long enough for the scientists to scratch them. 

Right now scientists haven’t figured out a way to create more long-lived hexagonal diamonds in the lab, but if a method is discovered, the researchers anticipate a range of uses for them — from more effective drill bit tips, to fancier engagement rings.

“If someday we can produce them and polish them, I think they’d be more in-demand than cubic diamonds,” Gupta said. “If somebody said to you, ‘Look, I’m going to give you the choice of two diamonds: one is a lot more rare than the other one.’ Which one would you pick?”

The researchers published their findings March 31 in the Journal Physical Review B.

Originally published on Live Science.

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