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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 ...

Explore diamond history, research, quality factors, and more in the GIA Gem Encyclopedia.

Explore aquamarine history, research, quality factors, and more in the GIA Gem Encyclopedia.

An Identification Report, with geographic origin added. For polished, loose or mounted natural alexandrite, demantoid, emerald, jade, opal, Paraíba tourmaline ...