Quarterly Crystal: “Ball Bearing” in Quartz
Quartz crystals with three-phase fluid inclusions from the Jinkouhe mine in the Sichuan Province of China have been sold for many years at gem and mineral shows such as those held annually in Tucson, Arizona.
Black Non-Nacreous Pearl Imitations Made of Beads Cut from Shell
The DANAT laboratory recently encountered two natural black color beads cut from an unknown mollusk.
Iolite-Sunstone Intergrowth and Inclusions
At the GIA Carlsbad laboratory, the authors recently examined a cabochon of “bloodshot” iolite (containing red, eye-visible platelets of hematite) intergrown with a sunstone.
New Find of Deep Blue Aquamarine from Nasarawa State in Nigeria
Nigerian aquamarine with exceptionally deep and saturated color also displays unusually strong pleochroism.
A Near-Round Natural Pearl Discovered in the Edible Oyster Magallana bilineata
An edible oyster from the Hab River Delta of Pakistan reveals a natural pearl.
Possible Natural Abalone Shell Blister
An intriguing item was sent by KC Bell to GIA’s Carlsbad laboratory for examination.
Gem Art of the Taj Mahal, Fancy White and Black Diamonds, and Unique Inclusions in Thai Corundum
Fall 2019 G&G Publication Information
This document provides the publication information for Gems & Gemology
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