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Why are Pink Diamonds Pink? GIA Researchers Dive Deep into their Crystal Structure
GIA researchers analyzed more than 90,000 natural pink diamonds to better understand how these rare and beautiful diamonds formed and got their color.
Bullish Predictions for 2019 Holiday Sales Despite Concerns, Sotheby’s Hong Kong Auction Sales
U.S. holiday sales predictions look good. Sotheby’s Hong Kong auction features GIA alumna pieces.
US Consumer Confidence Remains Strong; Alluvial Diamond Tracking and Illegal Gold
U.S. consumer confidence has kept the economy from sliding into a possible recession.
US Government to Industry: Know Your Supply Chain; De Beers, Alrosa Cut Rough Sales
State department tells industry it is not doing a good job tightening chain of custody reporting.
Kimberlites: Earth’s Diamond Delivery System
Examines the basic characteristics of kimberlites and their relationship with diamonds.
Alum’s Lifelong Quest: Searching for Jewelry Unicorns
Alan Nacht continues his family’s legacy - Bernard Nacht & Co. – and his quest for unforgettable jewelry.
Chow Tai Fook Expands Blockchain Initiative with GIA
Chow Tai Fook and GIA offer secure digital blockchain reports that document the diamond journey and grading information in one place.
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
