
GIA® 在迪拜开设鉴定所
GIA® Laboratory FZCO is located in the important global diamond center of Dubai and will provide diamond services with limited capacity.


尖晶石描述
The spinel used in jewelry is a small part of a group of minerals that share the same crystal structure. Not all of them form transparent crystals suitable for jewelry use, however. Spinel offers a range of hues, from orange to intense “stoplight” red, vibrant pink, and all shades of purple, blue, and violet through bluish green.



尖晶石的历史与知识
Spinel is a good candidate for the title of “History’s Most Underappreciated Gem.” Some ancient mines that supplied gems for royal courts from Rome to China produced spinel, but it was usually confused with better-known stones like ruby and sapphire.

尖晶石之旅
The Black Prince’s Ruby. The Timur Ruby. For centuries, spinel, the great imposter, masqueraded as ruby in Europe’s crown jewels

GIA Gübelin(古柏林)宝石项目:刚玉
几千年来,红宝石和蓝宝石(通常为蓝色,有时也有各种其他颜色)一直都是最重要的有色宝石。这些刚玉族矿物包含各种颜色类别,历史上原产于东南亚和中亚地区,如今由于它们珍贵稀有、色彩瑰丽、坚硬耐磨,已经成为备受追捧的宝石。由于有向分布的矿物内含物,刚玉可以呈现出星光和猫睛光,在不同的光源下观察时,有时还会变色。

GIA 区块链钻石鉴定证书
GIA 目前正使用区块链技术提供安全的数字钻石鉴定证书。此项证书服务提供同样独立、准确且公正的鉴定分析,如数字格式的 GIA 钻石鉴定证书和钻石鉴定精简版证书 (Diamond Dossier®)。

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