珠宝商 M.D. Hohenstine 令人惊艳的橱窗陈列是俄亥俄州哥伦比亚市中心一项备受欢迎的传统，拥有 50 多年的历史。

在世界各地买家变得更加谨慎的情况下，创纪录的大型彩色钻石和大型无色钻石的数量并没有以前那么可观。

GIA 研究人员分析并确认，戴比尔斯的 Lightbox 钻石是使用化学蒸气沉淀法培育而成。

晶簇首饰近年来大受欢迎。名人们戴着它在红毯上争奇斗艳，设计师们在宝石展上为之如痴如狂。

如果阿盖尔矿生产的其他宝石价格不提高，阿盖尔粉红色彩色钻石的供应可能会在 2020 年中断。另附：更多钻石的最新信息。

GIA serves alumni by continuing to share knowledge, develop and deliver education, and provide opportunity for our alumni throughout their careers.

Charles（查尔斯）和 Erna Leutwyler（厄纳·路特威勒）捐赠的奖学金，使得在宝石和珠宝专业颇具抱负的后代们能够追逐自己的梦想。

Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular, and Resorbed), that formed in a superdeep environment.

A clear example of calcite twinning is found in a ruby from the Mogok Stone Tract.

A unique inclusion in red spinel is indicative of a Burmese origin.

Unusual inclusions are found in an opal from Ethiopia’s Wollo Province.

A quartz crystal from Namibia, hosting of spherulitic to circular masses of shattuckite, is examined.

A Peruvian source yields a new azurite-malachite mixture.

Opal purportedly from a new deposit is found to be dyed.

An exhibit at the 2017 AGTA Tucson Gem Fair celebrates the work of Campbell Bridges.

Natural diamonds exhibit characteristics normally seen in synthetic material.

A pearl, thought to be natural, is revealed to be a bead-cultured specimen with a pre-drilled nucleus.

Coating on a beryl demonstrates the importance of thorough examination of jewelry and gem materials.

A light green specimen, submitted as a rough diamond, is actually a synthetic moissanite.

Examination of a chatoyant alexandrite cabochon.