Natural-Looking Inclusions in a Ramaura Synthetic Ruby

Milky clouds and flux inclusions in a synthetic ruby create a challenge for identification.

続きを読む

Metallic See-Through Backing on Omphacite Jade

An unusual effect created by the backing on a jade carving is observed in the Carlsbad laboratory.

続きを読む

Cat’s-Eye Hexagonite

A rare chatoyant hexagonite is examined in GIA’s New York laboratory.

続きを読む

Large Natural Diamonds with Asteriated Cloud Inclusions

Two natural diamonds containing cloud inclusions that resemble stars are examined in the Carlsbad laboratory.

続きを読む

A Large Multicolored Natural Blister Pearl

A large baroque-shaped blister pearl with a unique multicolored appearance is examined in the Mumbai laboratory.

続きを読む

Unique Moiré-Pattern Metallic Inclusion in Paraíba Tourmaline

An intriguing inclusion scene is analyzed in a Paraíba tourmaline from Brazil.

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