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GIA field gemmology team completes 100th expedition
The GIA team collected tsavorite, spinel and sapphire rough, verifying and recording the precise origin of each sample ...
GIA Field Gemology Team Completes One-Hundredth Expedition
Visit to Tanzania and Kenya marks 17 years of rigorous scientific studyCarlsbad, Jan. 30, 2025 (GLOBE NEWSWIRE) -- CARLSBAD, Calif. – January 30, 2025 – GIA field gemologists recently completed their ...