Trapiche-Like Ruby from the Batakundi Mine, Kashmir

Trapiche-like ruby from Kashmir shows a well-formed fixed six-rayed pattern.

続きを読む

Native Copper Inclusions in Indonesian Purple Chalcedony

Indonesian purple chalcedony containing interesting native copper inclusions is a first for the Carlsbad lab.

続きを読む

Lazurite in Spinel

Spinel is often inclusion free but occasionally showcases unusual inclusions.

続きを読む

こちらもご覧ください

YMAL GIA Ed
通学やオンラインでの教育について学ぶ
Learn About NextGem
GIA ネクストジェム(NextGem) ダイヤモンド研修 小売業向け
Explore GIA Laboratory Promotional Offers
GIAラボラトリーの特別オファーを見る
Shop the GIA Store
GIAストアで ショッピング