了解 GIA 用于确保最精确、最科学的钻石分级结果的分级流程。

GIA 是世界上公认的最具权威的钻石鉴定机构，并且在天然和养殖珍珠鉴定和分类领域,自 1949 年以来就一直处于领先水平。

无论在什么地方，只要能通过互联网登入“我的鉴定所”，您就可以即时查看和管理您的宝石工作状态。这个全天候安全门户网站提供有关您物品的最新信息以及其他宝贵资源。

了解一种可以更简单快捷地验证多个证书并访问多个 PDF 证书文件的方法。

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

“奥德赛太阳石”系列的最后一期介绍了太阳石山矿（一个拥有大量壮观的绿色和双色宝石的新矿址）。

Lush blue velvet. Rich royal purple. Exotic tanzanite is found in only one place on earth, near majestic Kilimanjaro

The first woman on the executive team and head of GIA’s innovative marketing and public relations efforts for nearly 30 years.

Brendan Hoare specializes in mantle geochronology and geochemistry.

Evan M. Smith specializes in diamond geology.

Rachelle Turnier specializes in colored gemstone geochemistry

Bassoo specializes in Understanding the spatial distribution and geological causes of defects in green diamonds

Sona Tajiryan specializes in Early Modern History of Global Gem Trade.

Yang Mo specializes in Mathematics.

GIA^® Laboratory FZCO is located in the important global diamond center of Dubai and will provide diamond services with limited capacity.

Library Services

Reserve your guided museum tour today at GIA and enjoy a unique immersive experience!

Staff Picks

了解锆石如此受欢迎的原因。

Zircon occurs in an array of colors. Its wide and varied palette of yellow, green, red, reddish brown, and blue hues makes it a favorite among collectors as well as informed consumers.