Andrey Yanchevsky: A brand is much more than just a name

Andrey Yanchevsky is the CEO and founder of the LA VIVION jewellery company. Over 20 years in this business, he has worked his way from a software programmer to a member of the board of directors, gaining experience in various sectors of the jewellery...

09 june 2025

Jonathan Kendall: Industry must focus on the diamond dream

From a lengthy career at the De Beers Group to playing a major role at CIBJO, the World Jewellery Confederation, Jonathan (Jonnie) Kendall is enjoying his diamond journey as much as ever today. He took time out from his busy schedule to speak...

26 may 2025

Dr. M’zée Fula Ngenge: How De Beers’ Lightbox undermined natural diamonds

De Beers’ venture into the lab-grown diamond (LGD) market through its subsidiary Lightbox backfired, undermining its century-old luxury positioning around natural diamonds, according to the African Diamond Council (ADC) Chairperson Dr...

19 may 2025

LDB’s David Troostwyk: London still has major role to play in global diamond trade

London Diamond Bourse (LDB) President David Troostwyk has had a varied career in the diamond business. David sat down with Rough&Polished to discuss how his love of diamonds started, his career, the state of the diamond trade in the UK and globally...

12 may 2025

David Johnson: De Beers balancing lab-grown and natural diamonds rarity while pioneering ethical transparency

De Beers has been differentiating its lab-grown diamond brand, Lightbox, by positioning it as an affordable, fashion-focused product. Group spokesperson David Johnson told Rough & Polished that this is in contrast to how De Beers promotes natural diamonds...

28 april 2025

Russian scientists develop a method for extracting lithium from pegmatites

06 march 2024

Specialists of the Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials have improved the sulfuric acid technology, which ups the extraction rate of lithium from pegmatites to about 90%.

According to RIA Novosti, experts have improved the existing method. The improvement will allow to extract 98% of the metal. The end products are lithium carbonate or lithium hydroxide.

The report clarifies that the institute synthesized solid electrolytes with the NASICON structure from lithium carbonate. This product is considered optimal for use in the manufacture of solid-state lithium-ion batteries.

The application of sulfuric acid technology requires large volumes of sulfuric acid. The Kola Mining and Metallurgical Company, part of Norilsk Nickel, can become a supplier of raw materials.

Alex Shishlo for Rough&Polished