GIA美国宝石研究院卡尔斯巴德校区获美国职业学校和学院认证委员会（ACCSC）颁发2023年优秀学校奖（2023 School of Excellence），这项荣誉包括五年认证以及一年获评为表现最佳ACCSC院校。

GIA美国宝石研究院卡尔斯巴德校区获美国职业学校和学院认证委员会（ACCSC）颁发2023年优秀学校奖（2023 School of Excellence），这项荣誉包括五年认证以及一年获评为表现最佳ACCSC院校。

GIA美国宝石研究院的优秀奖学金（Merit-based Scholarships）现已开始接受申请，美国境内和国际其他地区的准学员可在2023年9月30日前提交申请。 

GIA美国宝石研究院的优秀奖学金（Merit-based Scholarships）现已开始接受申请，美国境内和国际其他地区的准学员可在2023年9月30日前提交申请。 

GIA美国宝石研究院将引入一项报告注释，在Akoya养殖珍珠的指定质量范围加入珍珠行业常用且历史悠久的词汇「花珠」（Hanadama）。

GIA美国宝石研究院将引入一项报告注释，在Akoya养殖珍珠的指定质量范围加入珍珠行业常用且历史悠久的词汇「花珠」（Hanadama）。

Large near colorless, blue, and yellow diamonds broke auction records at Christie’s and Sotheby’s in the first half of 2022.

Both asterism and chatoyancy are observed in a color-change sapphire.

Pinkish orange crystal inclusions in a faceted quartz are identified as the rare phosphate mineral triplite.

Microscopic observation unveils the first known instance of skeletal metallic inclusions in Brazilian Paraíba tourmaline.

The Nineteenth Annual Sinkankas symposium, held at GIA’s Carlsbad, California campus, focused on gems and minerals of San Diego County.

Fiber-optic light creates a night sky scene in a yellow sapphire from Madagascar.

GIA president and CEO Susan Jacques receives the American Gem Society’s highest honor.

An exceptionally large South Sea bead cultured pearl is examined at GIA’s Mumbai laboratory.

An intriguing metallic inclusion is observed in a faceted garnet.

A newly developed treatment creates a phantom structure in opal visually similar to natural phantom opal.

A look at a 34.59 ct CVD-grown diamond examined at GIA’s Hong Kong laboratory.

An iridescent feather inclusion in natural diamond bears resemblance to Rainbow Mountain in Peru.

Isolated nitrogen confined to the outer surface of a 0.98 ct diamond causes “yellow skin.”

Unusual natural pink diamonds displaying faint yellow color zoning and strong yellow fluorescence are studied in the Carlsbad laboratory.