Ten loose pearls with interesting shapes and internal growth features were from Pteria-species mollusks.

一家大型的宝石矿业公司寻求改变世界收购和销售优质宝石的方式。

Hazel Forsyth（黑兹尔·福赛思）所著的“The Cheapside Hoard: London's Lost Jewels”（《奇普赛德宝藏：伦敦遗失的珠宝》）的评论。

在刚过去的假日季里，美国对钻石与珠宝的需求据估计增长了 3% 到 4%，但业务分布不均衡。

珠宝商和宝石学家使用一组特定的术语来描述已打磨钻石的各个部分。 形状或比例的某些测量数据最终会影响圆形明亮式钻石的切工等级。

Damiani: Alchemy of Desire（《达米亚尼：欲望的炼金术》）评论。

加入 GIA 在赞比亚 Kagem（卡棋穆）的祖母绿矿实地团队，了解可能是世界最大的祖母绿矿的相关信息。 这一矿山的开发为有色宝石行业带来彻底性变革。

零售分析师为感恩节后购物量的急剧下降感到困惑不解；网上销售量却强劲增长。

Yvonne J. Markowitz（伊冯娜·J.·马科维茨）和 Denise Doxey（丹尼斯·多克塞）的《Jewels of Ancient Nubia》（《古努比亚珠宝》）书评。

和 GIA 一起，前往莫桑比克的蒙特普埃兹红宝石矿场，探寻新世纪发现的最重大的红宝石矿藏。

查看纽约大都会艺术博物馆展出的印度和印度风格的珠宝藏品。

《原始邂逅：源自非凡宝石的当代珠宝》 (Untamed Encounters: Contemporary Jewelry from Extraordinary Gemstones)（作者：Mimi Lipton）的书评。

An examination of the finger-like feature mostly found in Ethiopian opal, and proposal for its formation.

Offers a firsthand look at Sri Lanka’s mining, cutting, jewelry manufacturing, and retail sectors, where tradition and innovation converge.

An overview of the Fall 2014 issue of Gems & Gemology, as well as GIA’s efforts to promote gemological research.

Presents what is believed to be the first report of a xenotime inclusion in gem-quality diamond.

A rare look at natural pearls from a known Spondylus species, commonly called “thorny” oysters.

Examination of two CVD synthetic diamonds with an unusual Fancy Dark gray color.

This synthetic ruby specimen features two growth methods within the same crystal.