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.
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.
Fluorite Sphere with Phosphorescent Coating
Nathan Renfro, July 31, 2015
A sphere with unusual phosphorescence is seen in the Carlsbad laboratory.
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.
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.
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.
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.
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.
The Colour Durability of “Chocolate Pearls” by Ballerina Pearl Co.
Garry Du Toit, Andy H. Shen, and Christopher M. Breeding
Colour-treated brown Tahitian cultured pearls, known in the trade as “Chocolate Pearls”, have become increasingly prevalent in the market.
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.