A new report from coloured gemstones miner Gemfields on the emerald, ruby and sapphire markets “… serves as a reminder of how ...

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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 ...

The GIA team collected tsavorite, spinel and sapphire rough, verifying and recording the precise origin of each sample ...