Diamonds & Gems

“Ombré Desert Diamonds” will emphasize cream-, champagne-, and brown-colored diamonds, shades that set natural stones apart from lab grown.
Latest in Diamonds & Gems

Located in Bangkok, the laboratory is Gemological Science International’s 14th location worldwide.

The diamond industry veteran has been named its senior sales executive.

It was featured in the miner’s latest sale, which brought in $24.8 million.

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

The lab has adjusted the scale it uses for nacre grading.


The nonprofit focused on mining communities in East Africa has added three new members to its advisory council.

Sapphires, emeralds, and rubies are finding their place in a U.S. market captivated by the gemstones once referred to as “semi-precious.”

The Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.

The country’s gem and jewelry exports fell 5 percent year-over-year last month, while imports declined 18 percent.

The miner announced plans to recommence open-pit mining at Kagem.

Its commercial-quality emerald sale held last month totaled more than $16 million, up from about $11 million in September 2024.

“The Duke Diamond” is the largest diamond registered at the Arkansas park so far this year.

Though currently paused, high tariffs threaten many countries where gemstones are mined. Dealers are taking measures now to prepare.

It includes pricing for unenhanced Colombian emeralds in the fine to extra fine range.

The miner said its April sale featured a mix of commercial-quality primary rubies and secondary rubies of varying quality.

The company said it expects sightholders to remain “cautious” with their purchasing due to all the unknowns around the U.S. tariffs.

The organization also announced its board of directors.

GCAL by Sarine created the new role to sharpen the company’s focus on strategic partnerships and scalable expansion.

The organization has reelected Kalpesh Jhaveri as president.

GIA’s labs in Dubai and Hong Kong are now accepting larger diamonds in light of the “logistical challenges” presented by the new tariffs.

Kentaro Nishimura, who has been with the pearl company since 1997, has been promoted to president and CEO of Mikimoto America.

The event, which will co-locate with the Monterey Bay Jade Festival, will bring education sessions focused on jade to the United States.

Rio Tinto unearthed the diamond at its Diavik mine in Canada’s Northwest Territories.

Ronald Winston, son of Harry Winston, donated the diamonds to the Smithsonian National Museum of Natural History in Washington, D.C.

Lotus Gemology founder Richard W. Hughes has translated Heinrich Fischer’s 1880 book “Nephrit und Jadeit” from its original German.

The Congress is scheduled to take place May 19-22 in Brasilia, Brazil.

The event, set for June 13-15, will feature educational presentations and guided visits to the state’s sapphire mines.
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