Seeking the Legacy of Australian Sapphire
The Wilson family is among the first miners who began working on the deposits in the sixties. The Kings Plains deposits are considered some of...
Chart: Inclusions in Natural, Synthetic, and Treated Sapphire
A case in point is the “internal diffusion” seen in a heat-treated sapphire, induced as the titanium from rutile silk inclusions was dissolved into the crystal...
GIA Detects Permanent Color Change in Synthetic Sapphire
The Gemological Institute of America (GIA) recently discovered that a synthetic blue...
GIA Field Gemology Team Completes One-Hundredth Expedition
GIA field gemologists recently completed their one-hundredth expedition, adding to the Institute's unrivaled store of independently verified gemological...
Yellow Sapphire: Natural, Heat-Treated, Beryllium-Diffused, and Synthetic
Yellow Sapphire: Natural, Heat-Treated, Beryllium-Diffused, and Synthetic · ABSTRACT · MATERIALS AND METHODS · RESULTS · CONCLUSIONS. This study...
An Update on Sapphires with Unstable Color
Figure 1. A padparadscha sapphire (3.54 ct) submitted to...
Unusually Large Flux-Grown Synthetic Sapphire
Figure 1.
Irreversible Photochromism in Synthetic Sapphire
This is the first documented case of corundum with irreversible photochromism encountered in a gemological laboratory.
Sapphire Series Part 4: Gem Synthetic Sapphire and Diffusion-Treated Synthetics
Jennifer Stone-Sundberg. October 23, 2013 ... Jennifer Stone-Sundberg. October 23, 2013...
Update on Montana’s Rock Creek Sapphire
Two other jigs process oversized sapphires, and the last two manage the tiny sapphires and the limited amount of fine gold. The new mining area...
Gia Saphirre
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