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Article

How to Protect Your Diamond from Chipping

Al Gilbertson, May 5, 2016

Find out more about what causes a diamond to chip, and 8 tips on how you can avoid chipping your diamond.

Fancy Black NPD Synthetic Diamond

Paul Johnson and Kyaw Soe Moe, April 30, 2014

Testing reveals the first synthetic nano-polycrystalline diamond (NPD) to be detected by a gem lab.

Article

Large Blue and Colourless HPHT Synthetic Diamonds

Wuyi Wang and Terry Poon, May 27, 2016

Five large HPHT synthetic diamonds, examined at GIA’s Hong Kong lab, indicate the advances that HPHT growth technology has made in quality and size.

G&G Brief presents an overview of the content of the Fall 2015 issue of Gems & Gemology.

Article

Autumn 2015 G&G: Trapiche Emeralds, Synthetic Diamonds and a Large Diamond Source

Russell Shor, November 4, 2015

G&G Brief presents an overview of the content of the Autumn 2015 issue of Gems & Gemology.

A 4.10 ct colorless diamond “slice” pendant with black inclusions set in white gold and surrounded by colorless to brown pavé diamonds by Rachel Boston, London. Photo courtesy Rachel Boston

Article

2017 Las Vegas Trade Patchy, Designers and Diamonds Lead

Russell Shor, June 28, 2017

Designers respond to market trends; demand for diamonds better than expected. Plus: Holiday season diamond marketing campaign gets funding boost.

Article

Autumn 2016 G&G: CVD Synthetic Diamonds Survey, Reversible Colour Change in Blue Zircon

Jennifer-Lynn Archuleta, October 31, 2016

A summary of the content found in the Autumn 2016 issue of Gems & Gemology.

Spring 2000 G&G Lab Notes

March 1, 2000

This section, from the Spring 2000 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

De Grisogono’s “Crazymal” collection introduced in Basel combines humor and craftsmanship to a luxury line. This pink flamingo ring is 18k gold, pink sapphire and colorless diamonds. Courtesy of De Grisogono

Article

Luxury Firms Adjust to the Era of Diminished Opulence

Russell Shor, April 17, 2017

Baselworld 2017: Luxury jewellery designers rethinking blingy, gem-laden looks for more artistic designs. Pink Star diamond sells for $71 million (£56 million).

Terri Ottaway stands behind a table with several very large quartz crystal specimens are lined up on it. Some of them come up to her waist height.

Article

GIA’s Museum Team Creates Magic for New York Campus

Jaime Kautsky, January 20, 2017

Display features award-winning diamonds, huge quartz rock crystals, unusual carved gems and pieces of jewellery that represent multiple eras of design.

Gem Localities of the 2000s

James E. Shigley, Brendan M. Laurs, A. J. A. (Bram) Janse, Sheryl Elen, and Dona M. Dirlam

The past decade saw some impressive discoveries of diamonds and coloured stones.

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