

将宝石学推向一个更大的舞台:2015 年 GSA 年度会议
在 2015 年 GSA 会议期间,GIA 举办了两次技术性研讨会,含 26 场专题演讲。 此外,GIA 选派的代表也在展区承办了一个展位,解答来访人员提出的各类问题。

世界宝石产地浪漫之旅:巴西克鲁塞罗矿
跟随 GIA 实地宝石学家的脚步,前往巴西克鲁塞罗碧玺矿,开启一段真正的宝石开采冒险之旅。 该矿每年生产 8 吨碧玺,同样如此让人兴奋不已的有色宝石产地少之又少。






Investigation into Invalidated Reports Continues: GIA Offers No-Cost Confirmation Service






Glassy Melt Inclusions in Sapphires from Montana
Two-phase inclusions are investigated in alluvial sapphires from deposits in Montana.

Blue Gahnite Inclusions inCat’s-Eye Heliodor
Blue octahedral crystal inclusions within heliodor cabochons are found to be gahnite, a zinc-rich end member of the spinel group.

Cleavage System in Pink Diamond
A Fancy Intense purplish pink diamond with a network of planar cracks and strain-induced bodycolor reveals an aesthetic geometric pattern.

Modified Rheinberg Illumination
A lighting method modified for gemological microscopy provides false-color contrast to enhance inclusion scenes.

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