

CVD实验室培育钻石大小刷新世界纪录

New CVD Material Submitted for Analysis (英语)
A group of large, high-quality CVD material demonstrates the continued challenge of identifying laboratory-grown gems.

Largest CVD Laboratory-Grown Diamond Submitted to GIA (英语)
Progress in creating laboratory-grown CVD diamonds allows for larger sizes, including the largest yet seen at the Carlsbad lab.







GIA 图书馆十佳数字化文献







A Review of Analytical Methods Used in Geographic Origin Determination of Gemstones (英语)
Geographic origin determination relies on a combination of gemological observations and advanced analytical tools. This contribution reviews the analytical methods commonly used to establish origin.

野外宝石学:建立研究收藏并了解宝石矿床的形成
自2008年以来,GIA已在六大洲开展了90多次实地考察,积累了超过22,000件彩色宝石参考样品。这些来源明确的彩色宝石藏品为GIA的地理产地鉴定研究提供了有力支持。

Geographic Origin Determination of Ruby (英语)
The world ruby market has undergone dramatic change in recent years, especially with the development of ruby mining in Mozambique. This contribution outlines GIA’s methods and criteria for establishing the geographic origin of ruby.

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