Suspect to Plead Guilty in $100m Brink's Jewel Heist

November 10, 26 by John Jeffay

One of seven men accused of stealing $100m in jewelry from a Brink's armored truck in California, USA, has agreed to plead guilty, more than four years after the theft. Carlos Victor Mestanza Cercado, 32, is expected to enter a guilty plea to a federal robbery... Read More...

Diamond Foundry Grows World's Largest Single Crystal

November 10, 26 by John Jeffay

US lab grown producer Diamond Foundry says it has produced the world's largest single-crystal diamond, measuring 200mm in diameter, twice the size of its previous record-setting achievement. The term "single crystal" means the diamond, which has ... Read More...

Botswana will Double De Beers Stake to 30%

November 09, 26 by John Jeffay

Botswana is to double its holding in De Beers to 30%, becoming its largest single shareholder under a proposed takeover by a consortium led by former CEO Gareth Penny. President Duma Boko announced the decision on November 9 in his State of ... Read More...

Pink 6ct Lab Grown Etched to Resemble Natural Rough

November 09, 26 by John Jeffay

GIA has identified a 6.06-carat pink lab grown that was deliberately fashioned and etched to resemble a natural rough stone. In its Fall 2026 issue of Gems & Gemology, GIA says it's the first case it has documented involving a CVD diamond modified in .... Read More...

GIA Acquires Collection of 2,665 Gems with Unusual Inclusions

November 08, 26 by John Jeffay

The Gemological Institute of America (GIA) has acquired a collection of 2,665 gems, minerals and crystals containing unusual inclusions, assembled over six decades by renowned microscopist John Koivula. The collection includes specimens ... Read More...

Memo by John Jeffay

November 05

It costs an estimated $10.85 to produce a carat of lab grown rough. The real money is being made much further down the supply chain. By the time lab grown diamonds reach consumers as finished jewelry, their total retail value has increased 21-fold, according ...  Read More...