Diamonds: Gemesis Diamond Co. Produces Largest, Whitest Lab-Created Diamond & More

Notes From the Underground

On April 30, Rio Tinto officially opened the new Argyle underground diamond mine in a move that will extend the small diamond producer’s life until 2020.

The East Kimberley, Australia, mine, which produces 20 million carats a year of mostly smaller stones, previously had been an open-pit producer. The extension of the mine will cost $2.2 billion.

The Argyle mine has produced some 800 million carats of rough diamonds in the past 25 years, including the highly desirable Argyle pinks, which the miner sells in a widely watched annual tender.

Argyle is one of the largest contributors to the East Kimberley economy, a statement said, with 70 percent of the workforce living locally.

“A new chapter begins at Argyle and I am proud to acknowledge the many men and women who have contributed to [its] discovery and development,” said the mine’s managing director, Kim Truter, in a statement.

Book of Gemesis

The 1.29 ct. Gemesis lab-created diamond

Gemesis Diamond Co. has produced what it calls the world’s largest, whitest lab-created diamond. The 1.29 ct. emerald-cut diamond, certified by the International Gemological Institute, is classified as the purest Type IIa and boasts E color with VVS2 ­clarity. The diamond retails for $7,633.64.

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