Article Search Results

A large group of people outside on GIA’s Carlsbad, California campus.

Article

Guardians of Trust: GIA’s Innovative Research, Instruments and Services

Russell Shor, September 20, 2019

GIA’s services and instruments have grown in importance and impact as new gem treatments and laboratory-grown gems have entered the market.

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.

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.

Article

Photoluminescence Review and Gem Material from Unusual Locales in the Spring 2016 G&G

Jennifer-Lynn Archuleta, April 26, 2016

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

Article

Summer 2015 G&G: Dual-Stars, Photomicrography Guide, Rubies from Tajikistan, New Micro-World Section

Russell Shor, August 14, 2015

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

shell pearl necklace, bracelet, earrings

Shell Pearl as a Pearl Imitation

Jessie Yixin Zhou and Chunhui Zhou, July 25, 2014

Examination of commercially-available "shell pearls" reveals imitation material.

Books: The Art of Bulgari: La Dolce Vita and Beyond, 1950–1990

Elyse Zorn Karlin, October 31, 2014

Review of Martin Chapman and Amanda Triossi’s The Art of Bulgari: La Dolce Vita and Beyond, 1950–1990.

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.

Jewels of the Romanovs: Family & Court, second edition

Books: Jewels of the Romanovs: Family & Court

Timothy Adams, October 31, 2014

Review of Stefano Papi’s Jewels of the Romanovs: Family & Court.

Article Search Results

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Gemstones

Article Search Results

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Gemstones

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