Exclusive
Tracr passes 5 million rough diamonds milestone as De Beers expands provenance push
De Beers Group's blockchain-enabled traceability platform Tracr reached a significant milestone in 2025, with more than 5 million rough diamonds individually scanned and registered, up from 2.8 million cumulative registrations reported in 2024. The...
28 september 2026
South African diamonds head to Hong Kong: SDT partners with BRINKS for JGW 2026
South Africa’s State Diamond Trader (SDT) has confirmed the country's participation in Jewellery & Gem World Hong Kong (JGW) 2026 through a partnership with BRINKS. SDT marketing and communication manager Tsholofelo Gopolang Tselapedi...
14 september 2026
David Benderly: PermaScribe seeks to put trust mark on diamond table, not just girdle
In this interview with Rough & Polished’s Mathew Nyaungwa, PhotoScribe Technologies president and chief executive David Benderly explains how PermaScribe differs technically from conventional laser inscription, its potential to strengthen security, and...
31 august 2026
The great reset: Paul Zimnisky on supply catharsis, De Beers' bargain and the case for natural diamonds
The natural diamond industry is in the throes of its most profound reset in a generation. Supply is plunging to its lowest level since 1987 and De Beers—once valued at over $9 billion—is reportedly being sold for as little as $1 billion.
Lab-grown...
10 august 2026
Roman Karakurkchi: Maintaining the highest standards of jewelry craftsmanship
Roman Karakurkchi is the founder of the Roman Karakurkchi jewelry brand and the International Jewellery School that brings together instructors from Russia, the USA, the Netherlands, Spain, Belgium, Italy, and Germany, as well as students from 65 countries...
03 august 2026
Liquefied natural gas will help ALROSA save half a billion rubles
The project would see the transfer of more than 200 pieces of heavy machinery to LNG and diesel operation at the Aikhal and Udachny Divisions. It envisages the construction of an LNG plant in Udachny and refuelling infrastructure that will include both fixed and mobile cryogenic filling stations.
According to experts, switching heavy equipment to using LNG and diesel at the same time would reduce liquid fuel costs by RUB 400–500 mln annually. Moreover, the project will have a positive environmental impact, reducing greenhouse gas emissions by 20–30% in CO2 equivalent.
Over a period of about 16 months, several types of diesel and LNG-converted equipment will be pilot-tested in real conditions. If all goes well, a decision will be made to build the LNG infrastructure and implement a full-scale switch to LNG and diesel operation for motor vehicles.
“Converting the vehicles would neither affect their technical performance nor require replacing their fuel systems. But, according to our calculations, it would reduce our consumption of diesel, which today costs approximately twice as much as natural gas, by more than 40%,” commented Ruslan Sizonov, Deputy Chief Operating Officer for Vehicle Management and Production Support of ALROSA.
Vladimir Malakhov, Rough&Polished
