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GIA Updating Gem Reports, Offering Origin Info for More Stones
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GIA Updating Gem Reports, Offering Origin Info for More Stones
The Gemological Institute of America (GIA) is redesigning its colored-gemstone reports and expanding the country-of-origin information the lab offers. The institute already has origin-determination services for alexandrite, emerald, Paraíba tourmaline, ruby, sapphire, and red spinel. Now its reports will also show country of origin for peridot, opal, and demantoid garnet, as well as for untreated jadeite jade and omphacite jade from Burma or Gua…
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