GIA has studied more than 400 important gemstones in the Edward J. Gübelin Gem Collection and is committed to sharing this repository of gemological information. Dr. Edward Gübelin’s lifelong study of ...
摄影:Robert Weldon(罗伯特·韦尔登)/GIA,E. J. Gübelin(E.·J.·古柏林)博士藏品友情提供 GIA 藏品 34365 Edward Gübelin(爱德华·J.古柏林)博士收集的藏品中,有许多来自世界各地的罕见宝石。文件(如下所示)展示了宝石的相关信息,包括在珠宝中偶尔使用的宝石 ...