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Diamond

Diamonds are among nature’s most precious and beautiful creations.

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Research

Kimberlites: Earth’s Diamond Delivery System

Karen V. Smit and Steven B. Shirey, August 15, 2019

Examines the basic characteristics of kimberlites and their relationship with diamonds.

Article

Chow Tai Fook Expands Blockchain Initiative with GIA

Russell Shor, July 22, 2019

Chow Tai Fook and GIA offer secure digital blockchain reports that document the diamond journey and grading information in one place.

Six different shaped red and pink diamonds lined up in a row.

Article

Bank Suspends Credit for ‘Unprofitable’ Rough Diamonds

Russell Shor, July 22, 2019

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.

Article

Jewels of Hollywood: Accessories and Jewelry that Made the Stars Shine

Amanda J. Luke, July 16, 2019

“Jewels of Hollywood,” on loan from the Kazanjian Foundation, showcases some of the jewelry and accessories associated with Hollywood royalty.

A ruby and diamond choker. The center section is made of six strands of red pearls, framed by rubies and diamonds.

Article

Mughal Jewels Auction: Al-Thani Collection Raises $109 Million

Russell Shor, July 16, 2019

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

A wide choker-style necklace of a row of emeralds with rows of diamonds above and below the emeralds.

Article

Spring 2019 Auctions: Premium Prices for Historic Pieces

Russell Shor, June 14, 2019

Gemstones and jewels with historical provenance are bringing the best prices at the spring 2019 auctions.

People meet and mingle at the entrance to the JCK Show.

Article

Headwinds Slow 2019 Vegas Business, Lab-grown Diamonds Proliferate

Russell Shor, June 14, 2019

Decent demand for finished jewelry, but less for loose gems. Plus: Lab-grown diamonds and responsible, sustainable business practices.

Article

Is There a Difference Between Natural and Laboratory-Grown Diamonds?

Russell Shor, May 31, 2019

Learn about the differences – and similarities – between natural and laboratory-grown diamonds, and how GIA’s researchers and grading laboratories can tell the difference

The entrance to the GemGenève show featured a large graphic wall.

Article

Trade Hopes for a Bright 2019 Vegas Show

Russell Shor, May 21, 2019

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

Orange-red-purple garnet and green clinopyroxene minerals can be analyzed for specific isotopes to help determine diamond ages.

Diamonds from the Deep: How Old Are Diamonds? Are They Forever?

Karen V. Smit and Steven B. Shirey, May 15, 2019

Age dating diamonds, which have been forming for billions of years, using isotope analyses reveals new information about the deep earth.

This Month's

Featured Gems

Peridot

Found in lava, meteorites, and deep in the earth’s mantle, yellow-green peridot is the extreme gem.

Fancy Color Diamond

Dazzling brilliance. Captivating color. These are the planet’s most valued gems.

Diamond

Diamonds are among nature’s most precious and beautiful creations.

Emerald

Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.

Citrine

Citrine is the transparent, pale yellow to brownish orange variety of quartz.

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Diamond

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Peridot

Fancy Color Diamond

Diamond

Emerald

Citrine

Diamond

Research

Reviewed

Topics

Topics

Gemstones

Gemstones

Featured Gems

Peridot

Fancy Color Diamond

Diamond

Emerald

Citrine

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