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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.
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.
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.
Diamonds from the Deep: How Old Are Diamonds? Are They Forever?
The age of something is fundamental. Humans, animals, wine, cars, and antiques are viewed and understood in the context of their age.
CVD Layer Grown on Natural Diamond
A composite of synthetically grown and natural diamond was recently identified by the Carlsbad laboratory.
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.
Diamonds from the Deep: How Do Diamonds Form in the Deep Earth?
Surprisingly, diamonds do not all form in the same way, but rather they form in various environments and through varying mechanisms.
Chart: Inclusions in Natural, Synthetic, and Treated Diamond
Provides a visual guide to the internal features of natural, synthetic, and treated diamonds.
Gemological Analysis of Lightbox CVD-Grown “White” Diamonds
Lightbox, a De Beers company, has begun selling “white,” pink, and blue CVD laboratory-grown diamonds at a flat rate of $800 per carat.
