
A Guide to Diamonds with the 480 nm Absorption Band
Summarizes the features of 480 nm band diamonds, including chameleon diamonds and those with unmodified orange hues, for rapid identification or advanced gemological testing.
Book Review: Diamonds: An Early History of the King of Gems
A review of Diamonds: An Early History of the King of Gems by Jack Ogden.
Book Review: Figures & Faces: The Art of Jewelry
Review of Figures & Faces: The Art of Jewelry by Patrick Mauriès and Évelyne Possémé
Book Review: Geology: A Very Short Introduction
Review of Geology: A Very Short Introduction by Jan Zalasiewicz.
Book Review: Masterpieces in Miniature: Engraved Gems from Prehistory to the Present
Review of Masterpieces in Miniature: Engraved Gems from Prehistory to the Present by John Boardman and Claudia Wagner.
Book Review: Symphony of Jewels: Anna Hu Opus 2
Review of Symphony of Jewels: Anna Hu Opus 2 by Janet Zapata with Sarah Davis.
Dr. John W. Valley Retires from GIA Board of Governors
Dr. John W. Valley, a member of the GIA Board of Governors since 2014, retired from the Board following their regular annual meeting held in early November in Carlsbad, CA.
GIA Same-Day Report Confirmation Service Available in New York
The GIA New York laboratory is now accepting GIA graded diamonds for the same-day confirmation service that was announced on January 9.
《宝石与宝石学》(Gems & Gemology) 2019 年秋季刊展示泰姬陵的宝石艺术
加利福尼亚州卡尔斯巴德 — 2019 年 11 月 18 日 –《宝石与宝石学》(Gems & Gemology) 2019 年秋季刊将宝石的科学和美丽相结合,充满了耀眼的图像和详细的研究。
通过 GIA 的零售商支持计划推广有色宝石
加利福尼亚州卡尔斯巴德 – 2019 年 4 月 8 日 – 参加 GIA 零售商支持计划的零售商现在可以使用进一步增加的有色宝石推广材料向客户讲述这些美丽宝石的故事。

GIA 承诺向手工采矿教育项目提供 130 万美元
加利福尼亚州卡尔斯巴德 - 2019 年 10 月 16 日 – GIA 的宝石指南项目在坦桑尼亚试点成功,得到了当地有色宝石小规模矿工的良好反馈,因此,GIA 将扩大分发范围,在非洲其他区域和国家分发这本颇具创意的手工采矿者宝石指南。
GIA Appoints Brandon H. Pace as General Counsel
GIA Creates High School Scholarship Program
GIA Knowledge Sessions
The GIA Knowledge Sessions are a series of talks and seminars that engage participants in the most diverse and pressing issues in gemology today, including gemstone origin, laboratory-grown stones and new discoveries in field gemology.

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