
Diamond Inclusion with Radiation Halo
A diamond’s inclusion, with a radiation stain shaped like a halo, is found to be monazite.
GILC 2016
A report from the International Colored Gemstone Association’s Gemstone Industry & Laboratory Conference (GILC), held in Tucson, Arizona on February 1, 2016.

Rare Emerald from China and Pink Sapphire from Sri Lanka
An emerald from a largely unexplored Chinese deposit is seen at Tucson, along with a pink sapphire recut after removal from a necklace.

Wheel of Light’s Mesmerizing Optics
A closer look at the Spectrum award-winning pendant from Nature’s Geometry.

Shrinkage “Footprint” in Rose Quartz
A debris pattern within a rose quartz’s fracture resembles a dinosaur’s footprint.

Afghan Emerald, Tajik Ruby, and Clarity-Enhanced Tourmaline
Updates on Afghan and Tajik materials, as well as treatment options to improve the clarity of various types of tourmaline.Updates on Afghan and Tajik materials, as well as treatment options to improve the clarity of various types of tourmaline.

Fordite from the Corvette Assembly Plant
Freeform fordite accumulated from a now-defunct method of painting automobiles was on display at Tucson.

A Fantastic Display of Phase Changes in a Sapphire’s Fluid Inclusion
Phase changes illustrate the temperature and pressure conditions in the fluid inclusion system of a Sri Lankan sapphire.





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。

璀璨内陆:探秘澳大利亚的蛋白石矿场 (英语)
Documents a trip to the renowned opal fields of Lightning Ridge, Koroit, Yowah, and Quilpie.

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