Gems Recovered from Sedimentary Rocks
Explores the formation of sedimentary rocks, gems found and formed in sedimentary environments, and the alluvial mining of these gems.
Micro-Features of Beryl
Provides a visual guide to the internal features of different varieties of beryl.
A Unique Petrified Tree Fern from Northeast China
Documents the gemological properties, chemical composition, and appearance of petrified tree fern discovered in northeast China.
Texas Topaz, Slovak Opal, a Beryl Inclusions Chart, and More
An overview of the Winter 2023 Gems & Gemology content.
Bohemian Garnets as Decorative Materials for Glass Vessels from the Late Sixteenth to Early Eighteenth Centuries
Examines a technique for setting cut garnets on glass objects, invented by Claudius vom Creutz of Nuremberg in the late sixteenth century.
Introducing the GIA Gemolite® NXT Microscope
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.
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.
GIA to Offer Same-Day Report Verification
GIA is taking strong action in response to reports of fraudulent GIA inscriptions on laboratory-grown diamonds cut to nearly match GIA graded natural diamonds.
GIA to Offer Same-Day Report Verification
GIA 正在採取強有力的行動，以回應關於實驗室製造鑽石切割幾乎與 GIA 分級天然鑽石相匹配的欺詐性 GIA 銘文的報告。
Historical Reading List: Australian Opal
GIA Unveils The Jade Report
GIA, whose expertise spans gemological research, laboratory services and education, is introducing the GIA Jade Report, featuring additional gemological information and a sleek, user-friendly layout to enhance the overall report experience for both industry professionals and consumers.
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.
理事會成員約翰‧威利（John W. Valley）博士榮休
加州卡爾斯巴德 ─ 2023年11月20日 ─ 自2014年起擔任GIA理事會成員的約翰‧W‧威利（John W. Valley）博士，11月初在加州卡爾斯巴德舉行的年度例會後正式退任。理事會及GIA管理層感激他在任期間作出重大貢獻，特別以其名字命名一項GIA獎學金，以表敬意。
Anna Martin to Retire from GIA
Anna Martin, GIA’s senior vice president of Institute and industry relations, will retire from GIA on December 31, 2023, after a very successful nine years with the Institute, 14 years on the GIA Board of Governors and more than 40 years as one of the most well-known and respected leaders in the gem and jewelry industry.
GIA Global Research Team Convenes in Carlsbad
The more than 60 scientists, engineers, gemologists and technicians of GIA’s global research team met November 1-3 at the Institute’s world headquarters in Carlsbad, CA.
GIA Global Research Team Convenes in Carlsbad
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