African diamond firms on COVID-19 response, recent developments

Rough & Polished recently contacted several diamond producers and exploration companies with operations in Africa to establish how their operations were affected by the Covid-19 pandemic and what they are doing to alleviate the impact. We also sought...

01 june 2020

“Get Diamonds” platform will soon be available in Russian, Hindi, Arabic and any other languages as per demand from any countries

A first-generation diamantaire Yoram Dvash, currently serving as the Acting President at World Federation of Diamond Bourses (WFDB) and the President of the Israel Diamond Exchange (IDE), launched his diamond manufacturing and trading...

25 may 2020

Sustainability is the only way forward - Rahul Jauhari

Rahul Jauhari, Sr Vice President of Global Sales & Marketing, Star Rays, has forged ahead professionally for more than 14 years garnering experience in Business Development, Luxury Lifestyle Consultancy, Market Analysis, Global Fashion / Luxury trend...

18 may 2020

Keeping global supply chains functioning vital – De Beers

Diamond giant, De Beers has said that it is essential to keep global supply chains functioning in view of the substantial impact of Covid-19 on the industry. Group spokesperson David Johnson told Rough & Polished’s Mathew Nyaungwa in an exclusive interview...

11 may 2020

Gabon courts foreign investors to grow fledgling diamond sector

Diamond production in Gabon, which has been a member of the Kimberley Diamond Certification Process since 2018, is currently dominated by artisanal miners. The artisanal miners are producing about 300 carats per month, according to Gabon’s director of...

05 may 2020

Scientists have created a material nearly as hard as diamond

01 october 2019

Scientists from Russia, Germany and Sweden createв the hardest material after diamond, TASS reported with the reference to the press service of the NUST MISIS. According to the scientists who created this material, it does not decompose when pressure and temperature drop.
“Usually materials modified at ultrahigh pressures are not able to retain their properties after extraction from the diamond anvil, but in this case, fellowing experimenters were successful,” the agency quoted Igor Abrikosov from MISIS, one of the authors of the work. “We modeled it on a supercomputer. The calculation results coincided with experimental data and explained the unusual properties of the new material.»
Scientists obtained superhard material by heating the rhenium in a diamond anvil to 1,700 ° C, then compressing it to 900 thousand atmospheres and passing nitrogen through it. After deriving the structure of rhenium pernitride, scientists have found a simpler method for its synthesis - the substance can be obtained using a conventional press, and by replacing pure nitrogen with ammonium azide. In that case, it is enough to compress rhenium by 365 thousand atmospheres.
The report also says that the bulk modulus of elasticity of the new substance is 428 gigapascals, while in diamond this figure is 441 GPa.

Victoria Quiri, Correspondent of the European Bureau, Rough&Polished, Strasbourg