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Summer 1989 G&G; Lab Notes
This section, from the Summer 1989 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.
Fall 1987 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.
Fall 1987 G&G; Lab Notes
Fall 1988 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.
Fall 1988 G&G; Lab Notes
This section, from the Fall 1988 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Spring 2010 Gem News International
Spring 2011 G&G; Lab Notes
Buff-Top Round Diamond
The New York lab recently examined several diamonds with an interesting variation on the cabochon.
10 ct HPHT-Treated CVD Laboratory-Grown Diamond
Testing a 10 ct CVD laboratory-grown diamond reveals evidence of HPHT treatment.
Misfit Diamonds: Beauty in the Imperfect
Unusual diamonds with eye-visible inclusions are gaining popularity in the market.
The Identification of Artificial Coloration in Diamond
The source of color in some diamonds, particularly fluorescent green and some yellow stones, can be very difficult to identify despite increasing knowledge about the radiation-related bands seen in the visible spectra of diamonds.
Summer 1991 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.
