Connect with us

DiamondBuzz

Lab grown Lonsdaleite: Chinese scientists create hexagonal diamond harder than natural diamonds

Published

on

A groundbreaking discovery by Chinese scientists has led to the creation of an artificial diamond that surpasses natural diamonds in strength and heat resistance. Lonsdaleite is an allotrope of carbon that has a hexagonal crystal structure, rather than the cubic lattice of conventional diamond. It was first identified in 1967 from the Canyon Diablo meteorite, in Arizona, USA, regarded as one of the best-preserved meteorite craters on Earth. It was named after crystallographer Professor Dame Kathleen Lonsdale.

 This new form, known as hexagonal diamond or lonsdaleite, has long been theorized to be harder than traditional diamonds but has remained difficult to synthesize in the lab. Recent advancements in material science have now made it possible, opening up exciting possibilities for industrial and commercial applications.

Scientists at Jilin University in China have successfully created an artificial diamond that surpasses natural ones in hardness and heat resistance. By heating compressed graphite under precise conditions, they have produced high-quality hexagonal diamonds, a structure known as lonsdaleite. This rare form, typically found in meteorite impact sites, has long been difficult to replicate in laboratories. The newly developed material exhibits remarkable structural integrity, promising advancements in various industries. A team from Jilin University and Sun Yat-sen University say their lab-grown version is at least 40 per cent harder and far more durable than a natural diamond.

“Our findings offer valuable insights regarding the graphite-to-diamond conversion under elevated pressure and temperature, providing opportunities for the fabrication and applications of this unique material,” they say in the journal Nature Materials.Their lab grown Lonsdaleite is likely to be used in a new generation of superconductors.

Continue Reading
Advertisement JewelBuzz Banner
Click to comment
Subscribe
Notify of
guest
0 Comments
Oldest
Newest Most Voted

DiamondBuzz

Botswana Looks Beyond Rough Diamond Sales, Eyes U.S. Jewelry Market

The Duty Exemption By US Presents An Opportunity For Domestic Jewelry Manufacturers In Gaborone To Bypass Traditional Middle-Market Hubs and Establish A Direct Pipeline To American Consumers

Published

on

Grappling with a painful downturn in global rough-diamond demand, Botswana is pivoting its economic strategy: expanding up the supply chain directly into American retail shelves while leveraging its resource wealth to fund conservation and diversification.

Speaking on the sidelines of New York Climate Week, Bogolo Joy Kenewendo, Botswana’s Minister of Minerals and Energy, highlighted the southern African nation’s plan to capitalize on a 0% import-tariff rate to the U.S. market. The duty exemption presents an opportunity for domestic jewelry manufacturers in Gaborone to bypass traditional middle-market hubs and establish a direct pipeline to American consumers.

shift The push into value-added manufacturing comes as the world’s top diamond producer by value navigates a broader structural Diamond revenues have long formed the bedrock of Botswana’s post-independence balance sheet, underwriting universal secondary education and tuition-free university funding. However, recent market volatility has underscored the vulnerabilities of a mono-sectoral economy.

Under the Botswana Economic Transformation Programme (BETP)—an initiative spearheaded directly by President Duma Boko and his vice president—the government is directing resources toward manufacturing, agriculture, and broader mining sectors to reduce its heavy reliance on rough diamond sales.

To support its luxury exports, Botswana is recalibrating its brand narrative around origin, environmental stewardship, and social impact. The country recently announced a five-year extension of the “Okavango Eternal” partnership alongside De Beers Group and the National Geographic Society. The initiative aims to protect the ecological integrity of the Okavango River Basin while tying diamond purchases to conservation efforts.

With De Beers currently facing an impending ownership change, officials remain optimistic that any capital restructuring could bring additional funds into Botswana to accelerate its domestic economic transition.

Continue Reading

Trending

JewelBuzz is Asia’s First Digital Jewellery Media & India’s No.1 B2B Jewellery Magazine, published by AM Media House. Since 2016, we’ve been the trusted source for jewellery news, market trends, trade insights, exhibitions, podcasts, and brand stories, connecting jewellers, retailers, and industry professionals worldwide.

We would like to hear from you...

GET WHATSAPP NEWS ALERTS

0
Would love your thoughts, please comment.x
()
x