Diamond market crash is Africa’s opportunity, not its crisis – M'zée Fula Ngenge

Global natural diamond supply is forecast to fall below 95 million carats this year, the lowest since 1987. For Dr. M'zée Fula Ngenge, chairperson of the African Diamond Council (ADC), this is not a death knell but a clarion call. In an exclusive...

12 october 2026

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

Chinese scientists test fiber film to protect glaciers from melting

11 july 2023

Researchers from Nanjing University are testing a material that protects snow and ice arrays from sunlight. The tests took place on the Dagu glacier at an altitude of 4.8 km above sea level, TASS reports.

Covering glaciers with rolls of reflective material is not a new idea. This has been done at ski resorts in Europe for almost 20 years. However, researchers from China are making the method of combating global warming more technologically advanced.

The film is made of cellulose acetate. This is a natural fiber that is obtained from plants. The substance can also be sprayed as an aerosol from drones in hard-to-reach areas.

Previous tests have shown that the material reduces melting by 50%-70%. The results of the new test on the Dagu Glacier will be announced in the fall. Scientists expect that the reflection rate of sunlight will be more than 93%.

Alex Shishlo for Rough&Polished