Richemont, Signet in talks to join De Beers consortium – report

Luxury group Richemont and US retailer Signet Jewelers are in advanced talks to join the Global Diamond Consortium (GDC) bidding for De Beers, according to five people familiar with the matter, Bloomberg reports.

16 october 2026

Rio Tinto begins Q4 of 2026 with strong operational performance

The Anglo-Australian mining group Rio Tinto has reported its third-quarter 2026 results, highlighting strong operational performance.

16 october 2026

Silver market deficit to widen in 2026 - report

In the latest World Silver Survey prepared by the Silver Institute and Metals Focus, the global silver market deficit is forecast to widen for the sixth consecutive year to 46.3 million ounces.

16 october 2026

Tharisa signs PGM offtake deal with Valterra Platinum, expands chrome collaboration

South Africa’s Tharisa has entered a binding arrangement for the sale of PGM concentrate to Rustenburg Platinum Mines, a subsidiary of Valterra Platinum, effective 1 January 2027.

16 october 2026

Norilsk hosts Nornickel’s 3rd Geology and Mine Surveying Forum

The 3rd Geology and Mine Surveying Forum, organized by Nornickel, has kicked off in Norilsk. The event continues to grow in scope, this year bringing together representatives from universities, equipment suppliers, design teams, mining companies, and...

16 october 2026

Is This Lab-Grown Diamond Company Trolling the Trade?

22 june 2017
(jckonline.com) - I came across a release from Ada Diamonds, a Silicon Valley–based, lab-grown diamond distributor: Ada Diamonds…recently discovered a number of undisclosed mined diamonds mixed into multiple parcels of laboratory-grown melee diamonds, ranging from 0.01 carats to 0.06 carats. The discovery, in two separate batches, was subsequently confirmed by the Gemological Institute of America (GIA). Ada Diamonds exclusively works with laboratory grown diamonds and has removed the mined diamonds from their supply. … As a result of the discovery of illicit mined diamonds, Ada Diamonds has implemented enhanced screening procedures to further inspect all parcels of melee diamonds as well as all finished jewelry to ensure that all diamonds sold by Ada Diamonds are in fact grown, not mined diamonds. It was a little hard to take this release seriously. There have been numerous documented cases of the opposite—undisclosed man-made diamonds being passed off as naturals. There is a good reason for that: Since nonmined diamonds typically sell for less than naturals, there is an economic incentive to disguise one as the other. There is little incentive to do the reverse. That would be a pretty inept criminal activity. In addition, while it’s obviously wrong to misrepresent any stone, a mined diamond does not legally have to be disclosed, like a synthetic does. That’s because, under the Federal Trade Commission Guides, a diamond is assumed to be from the Earth.