See Gem As
Tools
Research
Fingerprinting of Two Diamonds Cut from the Same Rough
With the information from a combination of tools now available, the sophisticated gemologist can fingerprint a given stone.
Synthetic Moissanite: A New Diamond Substitute
Synthetic moissanite is much closer to diamond in overall appearance and heft than any previous diamond imitation; this article reports on how to identify and characterize it.
Marine Mining of Diamonds off the West Coast of Southern Africa
A Melee-Sized CVD Synthetic Diamond in Pearl and Diamond Jewelry
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.
The Changma Diamond District, Mengyin, Shandong Province, China
One of China's most important discoveries to date is the Changma kimberlite district in Shandong Province.
Recent Discoveries of Large Diamonds in Trinity County, California
Winter 1994 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.
Winter 1994 G&G; Lab Notes
This section, from the Winter 1994 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Winter 1995 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.
Winter 1995 G&G; Lab Notes
This section, from the Winter 1995 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
