

Red Cordierite from Madagascar (英语)
The gemological properties of the first documented occurrence of red cordierite, from Madagascar, are examined.


Blue Sapphires From a New Deposit Near Andranondambo, Madagascar (英语)
A recent rush in Madagascar yields new sapphire production.

Large Colorless HPHT Synthetic Gem Diamonds from China (英语)
A report on the HPHT growth of large, gem-quality colorless synthetic diamonds in China.

Paula Crevoshay’s American Collection, Plus Jewelry with Nontraditional Gemstones (英语)
Lesser-known gem materials are seen in pieces alongside a collection created as an artistic inheritance for future generations of jewelry fans.

Analysis of Yellow Diamond Melee for Color Treatment and Synthetics (英语)
A parcel revealed to contain natural, treated, and synthetic diamonds reinforces the importance of identification.

最大的蓝色高温高压合成钻石 (英语)
Analysis of a 5.03 ct HPHT-grown blue synthetic diamond, the largest ever examined by GIA.

Ring with a CVD Synthetic Melee Diamond (英语)
A round-cut specimen set in a ring is the first mounted CVD synthetic melee diamond identified by GIA.





为斋蒲尔王公和现代权贵服务的珠宝商
走进一个不为西方人了解的世界——一个王公及其珠宝的世界,一个令现代商业和娱乐大亨以及皇族垂涎的世界。 看看现今采用珐琅 Kundan meena 珠宝和皇家气质的 polki 钻石制作的梦幻般的艺术品。





印度斋浦尔:祖母绿切割和交易中心
印度斋浦尔是全球宝石和珠宝行业重要的祖母绿切割和交易中心。 跟随 GIA 实地考察团队一起探访整个行业,了解公众或业内大部分成员都很难得见到的一家企业内部的错综复杂。

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