Exhibition will explore the late Queen's fashion 已故女王服饰展即将开幕

Earth's biggest ever ice age: Secrets revealed 地球有史以来最大冰川期的岩石记录被发现 Episode 240930 / 30 Sep 2024 New information found in rock ...
Gemological Institute of America

Book Review: Collector’s Guide to Herkimer Diamonds

查询 GIA 图书馆馆藏目录，图书馆内收藏了 57,000 本书籍、1,800 条视频、700 种期刊以及著名的卡地亚善本资源库及档案。
Gemological Institute of America

Burmese Blue Sapphire and Peridot from Mogok and a History of Emerald Mining in Habachtal ...

Finally, this issue includes the debut of an exciting addition to our regular columns, Colored Stones Unearthed, exploring the formation of colored stones from the crust-mantle and below. This first ...