The name “aquamarine” is derived from two Latin words: aqua, meaning “water,” and marina, meaning “of the sea.”

Learn about the factors that make aquamarine so desirable.

Learn about the factors that make alexandrite so desirable.

Aquamarine is the green-blue to blue variety of the mineral beryl.

海蓝宝石因海水而得名，其清新水润的色调如同畅游在清凉的泳池中。

Learn about the factors that make citrine so desirable.

Amethyst is the purple variety of the quartz mineral species and the gem most commonly associated with the color purple.

Learn about the factors that make amber so desirable.

Amber formed tens of millions of years ago, when sap from ancient trees hardened and fossilized.

Citrine—the transparent, pale yellow to brownish orange variety of quartz—is rare in nature. In the days before modern gemology, its tawny color caused it to be confused with topaz.

周大福和 GIA 将于 2022 年 10 月 31 日停止GIA 区块链钻石鉴定报告服务。

Deakin & Francis（迪肯和弗朗西斯）有着悠久的家族传统——已经传承了七代。 这座工作坊由 Charles Washington Shirley Deakin（查尔斯·华盛顿·雪利·迪肯）于 1786 年在英格兰伯明翰建立，自建成起，就在设计和制造全球最精致的袖扣。

World-renowned gem identification expert who guided GIA's lab services to the forefront of gemological research.

菊石：时尚的化石

GIA AGS Ideal^® 鉴定报告

A researcher, author, and instructor regarded as a

For more than 30 years, the beauty of science has found expression in every issue of Gems & Gemology, thanks in large part to one influential editor and innovator, Alice Keller.

A pioneer in the field of photomicrography and the study of inclusions led to groundbreaking changes in the study of gems.

2025年纽约校区教育目录