To be called moonstone, a mineral’s actual identity is not as important as the beauty of its adularescence.

Turquoise is one of the world’s most ancient gems. Archaeological excavations revealed that the rulers of ancient Egypt adorned themselves with turquoise jewelry, and Chinese artisans were carving it more than 3,000 years ago.

Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

爱德华·古柏林博士收集的藏品中，有许多来自世界各地不常见的宝石。

纯净的锆石虽然无色，但通常呈黄褐色至棕色。它也存在红色、蓝色、紫色和绿色等颜色。由于其高亮度和高色散性，无色锆石有时被用作珠宝中钻石的替代品。

Edward Gübelin（爱德华·古北林）博士收集的藏品中，有许多来自世界各地的罕见宝石。

尖晶石几乎有所有颜色——尤其是红色、粉色和蓝色——由于其储量丰富、价格适中且外形美观，因此是一种很受欢迎的宝石。

碧玺的化学成分非常复杂，该类矿物中已识别出十几种不同的矿物种类。

Individual opals are as diverse as snowflakes or fingerprints and can vary widely in appearance and quality. Learn about the factors that make opals so desirable!

Many people have heard of zircon but never seen it. This is mostly because of colorless zircon’s wide use as a diamond simulant in the early 1900s.

Jade has been cherished through the centuries. To the Chinese it is the

古老的珠宝再次焕发光彩 — 至少在探寻 19、20 世纪具有历史意义的潮流珠宝风格时就是如此。

他是一位杰出的教育家，他传授美国宝石研究院的第一个海外课程，并后来担任研究院院长和 Governor for Life（终生管理者）。

作为一位艺术家和宝石学家，他的研究影响了行业对彩色钻石的理解。

报告从蒙特普埃兹区域莫桑比克使用“助熔剂伴随部分愈合” (FAPFH) 和玻璃裂缝填充 (GFF) 已加热至高温红宝石。

Learn about the factors that make jade so desirable.

Historians believe the link between humans and lapis lazuli stretches back more than 6,500 years.

Turquoise might lack the sparkle and clarity of transparent colored gemstones like ruby, emerald, and sapphire, but its multi-layered history and soul-satisfying color make it a desirable gem. Its color can range from dull greens to grass greens to a bright, medium-toned, sky blue

介绍了对产自美国、墨西哥和中国的淡黄色长石进行的热处理和铜漫射试验结果。

五十年来一直在位于 47 街的 GIA 纽约鉴定所担任副总裁兼总监。