
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.

Molybdenite in Topaz
An unusual host-inclusion association is revealed when a cluster of crystals in a colorless topaz is discovered to be molybdenite.

Pezzottaite Debuts as the Newest Trapiche Gem Mineral (英语)
A rare mineral acquired along the Thai-Myanmar border exhibits the distinctive six-spoke pattern associated with trapiche.

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