Research Article Search Results
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.
Geographic Origin Determination of Blue Sapphire (英语)
In some cases, the value of a sapphire depends strongly on its geographic origin. This article details the origin data GIA has collected for blue sapphire and describes its methodology for using the data in geographic origin determination.

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