Gems
How to transform the certificate of origin from Opal Piauí in higher value-added
The Gems of Peter II town in Piauí should receive next month the certification of origin of Brazilian stone. By itself, the cert
The largest faceted emerald in the world, the giant Brazilian Teodora, valued at over $ 1 million is not Emerald
The largest emerald in the world - 57,500 carats and 25 pounds - named Teodora (Gift of God) that will be auctioned on January 2
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