Sally Eaton-Magaña, Christopher M. Breeding, and James E. Shigley ...
Explore diamond history, research, quality factors, and more in the GIA Gem Encyclopedia.
Download the latest issue for articles about gemology and jewelry design, interviews, education program descriptions, schedules and more.
An Identification Report, with geographic origin added. For polished, loose or mounted natural alexandrite, demantoid, emerald, jade, opal, Paraíba tourmaline ...
Designed for clients who seek in-depth insights into every aspect of a jewelry item. Comprehensive analysis of the diamonds in an item, including number of stones, shape, estimated carat weight, color ...
The quarterly journal of the Gemological Institute of America.
Field reports, videos, photography, and firsthand accounts from mines and industry hot spots around the world.
Field reports, videos, photography, and firsthand accounts from mines and industry hot spots around the world.
Field reports, videos, photography, and firsthand accounts from mines and industry hot spots around the world. Search GIA's library catalog of 65,000 books, 230,000 images, 2200 videos, 1200 ...
The quarterly journal of the Gemological Institute of America.
Starting in May, many Sri Lankan dealers have traveled to Ethiopia to buy this material, causing steep price increases in local gem markets. All of the mining around Chila is artisanal, but large ...
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