2021年Gianmaria Buccellati財団 最優秀ジュエリーデザイン賞を受賞したデザイン。カリフォルニア州カールスバッドでGIAジュエリー デザイン コースを修了したMeghan Simmonsによる作品。このスケッチでは、ゴールドやダイヤモンド ...

宝石爱好者通常将其形容为“白天的祖母绿，晚上的红宝石”，亚历山大变石是金绿玉矿物中非常罕见的变色类别。 它最初在 19 世纪 30 年代被发现于俄罗斯的乌拉尔山脉，现在，斯里兰 卡、东非和巴西都发现了它的身影，尽管如此优良的材料依然非常稀少而珍贵。 亚历山大变石描述 亚历山大变石 ...

宝石拓帕石是十一月生日石，蓝色拓帕石是十二月生日石。蓝色拓帕石是 4 周年结婚纪念日宝石，帝王拓帕石是 23 周年结婚纪念日宝石。 1768 年 1768 年葡萄牙王室为发现帝王拓帕石举行了庆典。 271 公斤 在巴西米纳斯吉拉斯州 ...

Diamond Grading Report Full 4Cs assessment with a plotted clarity diagram. For loose, natural D-to-Z color diamonds only, weighing 0.15 carats or more. View Sample Report ...

GIA 知识交流研讨会是一系列演讲和研讨会，与参与者共同探讨当今宝石学面临的各种最为紧迫的问题，包括宝石原产地、实验室培育宝石和实地宝石学的新发现。

Gems & Gemology is the quarterly scientific journal of the Gemological Institute of America.

GIA Knowledge Sessions, a series of talks and seminars that promise to engage participants in the most diverse and pressing issues in gemology today, including gemstone origin, laboratory-grown stones ...

Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading ...

Jewelry Design & Technology Program The Jewelry Design & Technology diploma program covers topics essential to becoming a jewelry designer and CAD (computer-aided design) technician, including ...

The first installment of this column discusses the formation of colored stones from the crust-mantle transition and below.

GIA’s laboratory in Bangkok, Thailand conducts research and provides services such as diamond grading and origin determination, colored stone grading and origin determination and pearl identification ...

Diamond is available in a range of sizes and qualities to fit every consumer's tastes. One of the first things most people learn about diamonds is that not all diamonds are created equal. In fact, ...