With more than 90 field expeditions on six continents since 2008, GIA has accumulated over 22,000 colored stone reference samples. This extensive collection of colored stones with known origins supports GIA’s research on geographic origin determination.
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Documents a visit to the sapphire, opal, and emerald mining and trading areas of Ethiopia.
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Chronicles the famed emerald source through the adventures of Peter W. Rainier, who directed the mine from 1926 to 1931 and restored its former glory.
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Go onsite to Zambia’s emerald mines with GIA’s field gemology team.
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Visit gem mining areas in Madagascar, Kenya, Tanzania, Zambia and Mozambique with GIA’s field gemologists.
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