最近讨论的铜扩散电气石存在性促使实验室探究这种可行性。

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!

Learn about jade's durability and how to care for your jade jewelry.

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。

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。

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。

Somewhere in Brazil in the 1500s, a Spanish conquistador washed the dirt from a green tourmaline crystal and confused the vibrant gem with emerald. His confusion lived on until scientists recognized tourmaline as a distinct mineral species in the 1800s.

Learn about the factors that make kunzite so desirable.

Typically, turquoise is judged on three basic quality factors: color, texture and the presence or absence of matrix. Learn more about turquoise and what makes this gem so sought after!

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