Some Diagnostic Features of Russian Hydrothermal Synthetic Rubies and Sapphires
Most Russian hydrothermal synthetic rubies and pink, orange, green, blue, and violet sapphires—colored by chromium and/or nickel—reveal diagnostic zigzag or mosaic-like growth structures associated with color zoning.
Spring 1999 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
Spring 1999 G&G; Lab Notes
This section, from the Spring 1999 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Summer 2008 G&G; Book Reviews
Coloring of Topaz by Coating and Diffusion Processes: An X-Ray Photoemission Study of What Happens Beneath the Surface
Surface-treated topaz has become a viable alternative to topaz colored by irradiation.
Summer 2008 Gem News International
Summer 2008 G&G; Lab Notes
Summer 2001 G&G; Lab Notes
Summer 2002 G&G; Book Reviews
全新含铬和钒的柘榴石，产自马达加斯加的特拉诺罗亚 (英语)
Pyrope-spessartine garnets from Tranoroa, in southern Madagascar, contain appreciable Cr and somewhat lower V contents.
Summer 2002 Gem News International
Update on the Identification of Treated “Golden” South Sea Cultured Pearls
Summer 2002 G&G; Lab Notes
This section, from the Summer 2002 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Summer 2003 G&G; Book Reviews
Summer 2003 Gem News International
Summer 2003 G&G; Lab Notes
This section, from the Summer 2003 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
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