卡庞拓帕石矿床(巴西米纳斯吉拉斯欧鲁普雷图) (英语)
This article examines the history of the Ouro Preto district as well as the geology of the area and occurrence of the topaz.
圣卡洛斯橄榄石 (英语)
Marketed throughout the world, San Carlos material is often confused with, and sold as, peridot from localities that are better known and documented.
哥伦比亚的祖母绿 (英语)
A comprehensive review of the history and geology of Colombian emeralds together with descriptions of some of the most famous gems to come from this locality.

GIA检测34.59克拉化学气相沉积法(CVD)实验室培育钻石
GIA 香港分校开放日
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