Article Search Results

Two white jade bracelets with dark color patches.

Nephrite Bracelet with Filled Cavity

Jianjun Li, Guihua Li, and Haixia Chen, August 9, 2018

A jade bracelet contains unusual fillers, used to create a smooth surface.

This 20.60 ct specimen was purchased by the client as a “natural white pearl.”

Filled Pearl with Surface Features

Larry Tai-An Lai, January 26, 2018

A pearl, thought to be natural, is revealed to be a bead-cultured specimen with a pre-drilled nucleus.

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.

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

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.

Fluorite Sphere with Phosphorescent Coating

Nathan Renfro, July 31, 2015

A sphere with unusual phosphorescence is seen in the Carlsbad laboratory.

Article

Spring 2015 G&G Examines Blue Spinel, Chinese Jewellery Design and the Latest in Synthetics

Russell Shor, June 12, 2015

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

Bangle of polymer-impregnated aventurine quartz

Polymer-Impregnated Aventurine Quartz, a New Imitation of “Ice Jade”

Larry Tai-An Lai, April 30, 2014

A bangle, thought to be jadeite jade, is revealed by laboratory testing to be polymer-impregnated aventurine quartz.

Scapolite fragments exposed to UV radiation

Tenebrescent Irradiated Scapolite

Tara Allen, Nathan Renfro, and David Nelson, April 30, 2014

The effect of irradiation on scapolite with tenebrescence, a colour-change phenomenon that occurs after exposure to UV light.

Article Search Results

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Gemstones

Article Search Results

Types

Content Type

Reviewed

Topics

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Gemstones

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