Gems & Gemology, the professional quarterly of GIA, debuted in 1934. Appearing in the 306 th issue, this article looks back at the first 75 years. By reviewing the journal’s milestones, it also traces ...

以下是 GIA 将休业的法定假期列表。 2025 年 5 月 5 日（星期一） 玛哈•哇集拉隆功国王陛下加冕（补假） 2025 年 5 月 12 日（星期一） 卫塞节（补假） 2025 年 6 月 3 日（星期二） 王后陛下诞辰 2025 年 7 月 10 日（星期四） 守夏节 ...

The June Hong Kong Jewellery & Gem Fair opens on June 22, a mid-year trading event for the gem and jewelry trade. Visit GIA at booth 3M100. Learn about sales tools, aids and apps available through the ...

CARLSBAD, Calif. – June 20, 2025 – The Board of Governors of the Gemological Institute of America, Inc. (GIA) has named Pritesh Patel, currently GIA’s Chief Operating Officer, as the Institute’s ...

Developed by the Harvard Business School (HBS), the program focuses on new research and best practices to deliver practical value and actionable techniques. Participants learn using the HBS case study ...

由哈佛商学院设计的课程，重点课题包括最新研究及最佳实践，学员可活学活用，掌握实用技巧付诸行动。课程采用哈佛商学院的案例研究教学法，充分利用哈佛大学丰富的商业智慧，探讨宝石和珠宝产业的挑战与契机。课程内容包括互动式讲座及小组研究，通过热烈讨论启发思维和创新意念。

At the GJX show, Pillar & Stone (San Francisco, California) offered bright green jade from Guatemala, confirmed to range from jadeite to omphacite, that was highly translucent to nearly transparent.

For the first time ever, the famous Hope diamond was graded by a widely recognized system. Although the 45.52-ct weight was confirmed, the GIA Gem Trade Laboratory graders found the clarity—recently ...

Reports and Services available for jewelry.Jewelry Report Designed for clients who seek in-depth insights into every aspect of a jewelry item. Comprehensive analysis of the diamonds in an item, ...