The devastating damage of Hurricanes Harvey in Texas and Irma in Florida will likely take a toll on luxury sales.

去年开采的钻石原石平均价值急剧下降，而钻石需求则倾向于小型和较低品质的钻石。

GIA 研究科学家 Evan Smith（埃文·史密斯）博士分享了自己在意想不到的大钻石原产地方面取得的研究成果，并讲解了钻石特征会告诉我们关于地球的哪些信息。

James Shigley（詹姆斯·史格雷）博士是 GIA 的一位特聘研究员，也是钻石和钻石鉴定领域的重要专家之一。 在 2017 年拉斯维加斯 JCK 国际珠宝展演讲中，他分享了高温高压处理 (HPHT) 和化学蒸气沉淀法 (CVD) 合成钻石的最新进展

GIA 实地宝石学教育经理 Andy Lucas（安迪·卢卡斯）分享了自己在哥伦比亚重要的祖母绿开采和切磨行业所观察到的变化。

教育团队创立了一个在课堂上以及行业内分步骤评估珠宝工艺的系统。

The second half of 2017 will see slow but steady growth in diamond demand, according to De Beers’ forecast. Also: Updates on synthetic diamonds, trade and auctions.

这些红色、粉红色和橙色的宝石可以唤起人们的热情与激情，是炎炎夏日的绝佳配饰。

Evaluates the usefulness of Raman spectroscopy in distinguishing the color varieties of nephrite based on the relative ratio of Mg to Fe concentration.

Reviews the characteristics of tourmaline from pegmatites in the Luc Yen district of northern Vietnam.

Reviews diamond discoveries at the Lomonosov deposit, as well as the geology of the Arkhangelsk kimberlite province.

Presents a detailed examination of about 800 samples of carbonado diamond from Brazil and the Central African Republic, including possible models for its genesis.

An overview of Summer 2017 issue of G&G.

Provides a visual guide to the internal features of natural, synthetic, and treated sapphires.

Demonstrates the importance of this method in identifying diamond treatments, based on the analysis of PL maps acquired from a brownish orange HPHT synthetic diamond.

Documents a visit to the upper Missouri River and Rock Creek sapphire mining areas.

在 2011 年的大地震之后，校友会决心带领同行度过动荡时期。 强调帮助校友相互联系的重要性。

全球各地的校友参加分会活动并全力支持本行业。 您可通过多种方式加入他们。

A submission to the New York lab yields an unexpected reaction to long-wave UV radiation.

Unique natural conch pearls are studied in the New York lab.