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Alum’s Lifelong Quest: Searching for Jewelry Unicorns
Alan Nacht continues his family’s legacy - Bernard Nacht & Co. – and his quest for unforgettable jewelry.
Bank Suspends Credit for ‘Unprofitable’ Rough Diamonds
De Beers and Alrosa slashed rough diamond sales after ABN AMRO’s says it will no longer finance rough purchases for goods that can’t be cut profitably.
Jewels of Hollywood: Accessories and Jewelry that Made the Stars Shine
“Jewels of Hollywood,” on loan from the Kazanjian Foundation, showcases some of the jewelry and accessories associated with Hollywood royalty.
Mughal Jewels Auction: Al-Thani Collection Raises $109 Million
Collectors from around the world descended on Christies’ Maharajas & Mughal Magnificence auction of the jewels from the Al-Thani Collection on June 19.
Spring 2019 Auctions: Premium Prices for Historic Pieces
Gemstones and jewels with historical provenance are bringing the best prices at the spring 2019 auctions.
Is There a Difference Between Natural and Laboratory-Grown Diamonds?
Learn about the differences – and similarities – between natural and laboratory-grown diamonds, and how GIA’s researchers and grading laboratories can tell the difference
Trade Hopes for a Bright 2019 Vegas Show
All eyes are on Las Vegas as the jewelry business slows in other parts of the world.
Diamond Research Gives Clues to the Formation of the Continents
Mineral inclusions trapped in diamonds reveal the continents’ construction – and helps GIA researchers date diamonds.
De Beers Ups Supply, FTC Warns About ‘Eco’ Claims
DeBeers responds to fluctuations, and the FTC issues warnings on laboratory-grown diamonds. Plus: 302.37 ct Graff Lesedi La Rona is revealed.
Inside De Beers’ Lightbox Diamonds
GIA researcher analyzes and confirms that De Beers’ Lightbox diamonds are grown using the chemical vapor deposition process.
The Latest on Synthetic Diamonds
Dr. James Shigley, GIA distinguished research fellow, is one of the foremost experts in diamonds and their identification. In this presentation recorded at the 2017 JCK Las Vegas show, he shares the latest developments about HPHT and CVD synthetic diamond
The Unexpected Origins of Big Diamonds
Dr. Evan Smith, Ph.D., GIA research scientist, shares his findings on the unexpected origins of big diamonds and what their characteristics tell us about the earth.
