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A ruby and diamond choker. The centre section is made of six strands of red pearls, framed by rubies and diamonds.
Article
Mughal Jewels Auction: Al-Thani Collection Raises $109 Million (£87.5 Million)

Collectors from around the world descended on Christie's Maharajas & Mughal Magnificence auction of the jewels from the Al-Thani Collection on 19 June.

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The entrance to the GemGenève show featured a large graphic wall.
Article
Trade Hopes for a Bright 2019 Vegas Show

All eyes are on the upcoming jewellery sales events in the US – the Luxury and JCK shows in Las Vegas – as business slows down in other parts of the world.

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Botswana’s Scintillating Moment
Botswana’s Scintillating Moment

Examines the history of diamond production in Botswana and the long-term outlook for beneficiation through value-added industries.

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Chameleon diamond before and after heating
Chameleon Diamond with Nickel Absorption Band

A rare chameleon diamond is examined in GIA's Carlsbad lab.

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Fancy yellow 0.40 ct type Ib CVD-grown synthetic diamond
Yellow CVD Synthetic Diamond

A Fancy yellow type Ib CVD-grown synthetic diamond undergoes testing at the New York lab.

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Landmark Articles from GG Hero
Article
Landmark Articles from
Gems & gemmology

For eight decades, Gems & Gemology, GIA’s peer-reviewed quarterly journal, has educated generations of readers and protected the gem-buying public. We share ten landmark articles that were particularly significant to gem and jewellery professionals.

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Al Gilbertson and Scott Sucher
Article
Geo-Literary Society Explores Diamond Cut

A recap of the February 2014 annual meeting of the Geo-Literary Society in Tucson, where speakers Scott Sucher and Al Gilbertson discussed the evolution of diamond cutting.

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IMG - Smithsonian thumbnail V2 154734 300x169
Article
The Smithsonian Gem and Mineral Collection

A behind-the-scenes exploration of the Smithsonian's Janet Annenberg Hooker Hall of Geology, Gems and Minerals.

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Global Rough Diamond Production Since 1870

Historically, global rough diamond production has fluctuated greatly due to a myriad of causes, many of which are explored in this article.

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The Cullinan Diamond Centennial: A History and Gemmological Analysis Of Cullinans I And II

Eight decades after the Cullinan diamond was mined, a team of gemmologists examined the two famous gems that were created from it to become part of the Crown Jewels of England.

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