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

Facade paints for the Arctic developed in Norilsk

20 may 2024

The researchers of the Polar State University have developed a line of plaster and paint facade coatings for Arctic conditions. Special compositions have high strength and resistance to atmospheric wear, ttelegraf.ru reports.

Mikhail Yelesin, Head of the Department of Construction, Heat and Gas Supply at the Polar University, has developed the technology and composition of fast-hardening concretes containing waste from the metallurgical industry, which are characterized by high hardening rate, good performance properties and sulfate resistance.

During his work on the research, Yelesin received six patents for his inventions.

"Together we have repeatedly tested polysulfide solutions on construction sites in the city to confirm the scientific novelty of the work. The results showed a tremendous strength gain. Under normal conditions concrete should solidify for about 28 days, while during the experiment it only required three days," said Anvar Nizamutdinov, head of the Department of Capital Repairs and Construction of the city of Norilsk.

Alex Shishlo for Rough&Polished