GIA美国宝石研究院的专业知识涵盖宝石学研究、鉴定所服务和教育， 现宣布推出提供更全面的宝石学信息的《GIA玉石鉴定报告》，采用简单易用的版面设计，增强行业专业人士和消费者的整体报告体验。

GIA美国宝石研究院的专业知识涵盖宝石学研究、鉴定所服务和教育， 现宣布推出提供更全面的宝石学信息的《GIA玉石鉴定报告》，采用简单易用的版面设计，增强行业专业人士和消费者的整体报告体验。

加州卡尔斯巴德 ─ 2023年11月20日 ─ 由2014年起担任GIA理事会成员的约翰‧W‧威利（John W. Valley）博士，11月初在加州卡尔斯巴德举行的年度例会后正式退任。GIA理事会及领导高度表扬其在任内作出重大贡献，宣布以其名字命名一项GIA奖学金，以示敬意。

 理事会成员约翰‧威利（John W. Valley）博士退任

安娜‧马丁（Anna Martin）荣休告别GIA

Anna Martin, GIA’s senior vice president of Institute and industry relations, will retire from GIA on December 31, 2023, after a very successful nine years with the Institute, 14 years on the GIA Board of Governors and more than 40 years as one of the most well-known and respected leaders in the gem and jewelry industry.

 GIA于加州卡尔斯巴德举行环球研究团队会议

A recap of the second annual Turquoise United Conference.

A report on the seventh annual Chicago Responsible Jewelry Conference.

Examination of a heart-shaped ruby reveals a zinc glass filler.

A greenish blue spinel displays a large network of needle-like dislocations clustered in a six-rayed star pattern.

A precipitation of an unidentified mineral creates a complex moiré pattern in a fissure of a purple spinel.

Fiber-optic illumination reveals rectilinear zigzag-patterned films with vibrant colors in a blue sapphire.

Blade-like magnetite inclusions developed from a healed fracture in peridot resemble a dark, rainy afternoon in a lakeside city.

An 8.33 ct rectangular heliodor displays two tourmaline inclusions and a thin band of fluids.

The quality and size of this 4.04 ct CVD-grown diamond ring demonstrate the advancing technology in laboratory-grown diamonds.

Transparent crystal inclusions and gas bubbles are observed in a garnet-topped doublet.

A Guatemalan jade called yongchuliao has gained popularity among Chinese buyers.

An etch channel in the crown facets of a diamond resembles a mace-like weapon.