Exclusive
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...
Yesterday
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
Identified a type of plastic that decomposes in the ocean faster than paper
It turned out that the widespread bioplastics, which we have been using for more than 100 years, gives hope for ridding the oceans of plastic.
Cellulose diacetate, also known as CDA, is made from cellulose, a natural polymer found in the cell walls of plants. The material is widely used in production - from eyeglass frames and photographic film to cigarette filters. Researchers from the Woods Hole Oceanographic Institution have found that CDA decomposes faster than other plastics in seawater. Technically, it is a bioplastic, and with a simple procedure called "foaming" making it porous, CDA decomposes even faster than paper.
During a nine-month experiment, porous CDA placed in tanks with continuously circulating seawater lost 65-70% of its original mass.
"Foamed" cellulose diacetate decomposes 190% faster than its solid counterpart, ecoportal.su reports.
Alex Shishlo, Editor in Chief of the European Bureau Rough&Polished
