Helga Pombal: Angola's Stardiam finds solution to the threat posed by lab-grown diamonds

Stardiam manager of production Helga Pombal told Rough&Polished's Mathew Nyaungwa on the sidelines of the Angola International Diamond Conference that lab-grown diamonds are creating a parallel market for more accessible stones, combined with lower...

11 november 2024

Ellah Muchemwa: ADPA to launch Africa's first diamond mining standard next year

The African Diamond Producers Association (ADPA), which is based in Luanda, Angola, and represents the interests of mainly African diamond producers and those with the potential to produce diamonds, will next year launch the Sustainable Development...

04 november 2024

Dmitry Fedorov: I want our jewelry to be displayed at a museum in the future

Dmitry Fedorov is the founder of the eponymous jewelry house. His main focus is the creation of Orthodox-inspired premium luxury jewelry of high artistic merit. He told Rough&Polished about his journey in the jewelry industry, about choosing the ‘Orthodox...

28 october 2024

Responsible business practices ‘no longer optional’, says WDC President Feriel Zerouki

The president of the World Diamond Council takes time out of her busy schedule to tell Rough&Polished readers about the critical work of the WDC. Zerouki, the first female present of the body, which includes all the important industry organizations among...

14 october 2024

James Campbell: Botswana Diamonds optimistic as it enters uncharted territory of using AI for mineral exploration

London-listed Botswana Diamonds has expressed optimism about the company’s use of artificial intelligence (AI) to scan the exploration database in Botswana to look for new mineralised deposits. Company managing director James Campbell told Rough...

07 october 2024

Scientists discover another stone in a unique matryoshka diamond from Yakutia

02 april 2021
It was discovered during additional research of a mineral retrieved in 2019

(TASS) - Scientists from the Research Geological Enterprise of diamond miner ALROSA have discovered another stone inside a unique matryoshka diamond mined in the Nyurba District of Yakutia, according to the company’s media communications statement on Friday.
“The scientists of the Research Geological Enterprise discovered another diamond in the inner diamond of the matryoshka diamond - and it is also a matryoshka,” the statement says. "It is quite possible that we will discover more than one pair of diamonds inside this truly unique diamond."
According to the company, the diamond was found during additional research of the mineral retrieved in 2019.
The matryoshka diamond, which contains another freely moving diamond inside, was recovered in Yakutia in 2019 at the company’s Nyurba Mining and Processing Division. The diamond weighs only 0.62 carats (0.124 grams) and its maximum dimensions are 4.8 x 4.9 x 2.8 mm. “Calculations are underway to determine the mass of the newly discovered ‘diamond in a diamond’ in a matryoshka diamond,” the company added.