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

Mehul Shah pledges to bring new approach to leading WFDB

Mehul N. Shah, who was elected in July as President of the World Federation of Diamond Bourses at the 41st World Diamond Congress in Singapore, is one of India's best-known diamantaires and a prominent leader in the international diamond industry...

27 july 2026

Charlotte Rose on making history, modernising the London Diamond Bourse, and why finance is the industry’s silent crisis

When Charlotte Rose was elected president of the London Diamond Bourse in June 2026, she didn't just break an 86-year tradition—she became the first woman to lead any diamond bourse globally. In an exclusive interview with Rough & Polished’s Mathew...

20 july 2026

Si6 Metals identifies possible nickel-sulphide deposits in Botswana

12 september 2022
Si6 Metals says soil samples taken from Maibele East and Mashambe prospects in Botswana showed high levels of copper, zinc and nickel suggesting the possibility of nickel-sulphide deposits.
The prospects are outside of the main Maibele base metals resource areas and are wholly-owned owned by Si6.
“These encouraging results in Botswana on our 100%-owned tenure are a positive development for Si6 as we look to accelerate exploration activities in the country,” said company technical director Steve Groves.
He said further work, including detailed mapping, sampling and ground geophysics are required to generate drill targets in the area.
Si6 is primarily exploring base and precious metals in the Limpopo Mobile Belt in Botswana, a district known for hosting major nickel and copper producing operations.

Mathew Nyaungwa, Editor in Chief of the African Bureau, Rough&Polished