Never Stop Innovating: Gem Artist Chi Huynh
Profiles a groundbreaking gem artist on a quest to bring new concepts, techniques, and products to the industry.
A Canary in the Ruby Mine: Low-Temperature Heat Treatment Experiments on Burmese Ruby
Documents heating experiments conducted on Burmese rubies to find useful indicators of heat treatment at temperatures below 1200°C.
Composition and Spectral Characteristics of Porcelain-Treated Turquoise
Characterizes turquoise treated with an inorganic additive that dramatically improves the luster and color of low- and medium-quality material.
Fluorescence Characteristics of Two Copper-Diffused Plagioclase Feldspars: Labradorite and Andesine
Examines the use of strong fluorescence near 394 nm under 320 nm excitation as a potential means of identifying copper diffusion treatment of feldspar.
Calcite Found on the Surface of a Saltwater “Nacreous” Pearl
The Hong Kong laboratory reports on the unexpected discovery of calcite on the surface of a “nacreous-looking” pearl.
Fall 2022 Auction Highlights
A successful spring season set high expectations for colored diamonds at auction in late 2022.
Omphacite in Pink Diamond
A bluish green omphacite crystal is discovered in a Fancy brown-pink diamond.
GIA推出更新及经济的实验室培育钻石精简版报告
grading and identification organization, is now offering a lower-cost GIA Laboratory-Grown Diamond Report - Dossier. 185 / 5,000 Translation results Translation result 美国宝石学院 (GIA) 是领先的宝石学分级和鉴定机构，现在提供成本更低的 GIA 实验室制造钻石报告 - 卷宗。
GIA推出更新及经济的实验室培育钻石精简版报告
grading and identification organization, is now offering a lower-cost GIA Laboratory-Grown Diamond Report - Dossier. 185 / 5,000 Translation results Translation result 美国宝石学院 (GIA) 是领先的宝石学分级和鉴定机构，现在提供成本更低的 GIA 实验室制造钻石报告 - 卷宗。
New Year, New Digital GIA Report
The start of 2023 marks a significant milestone in the digital transformation of the global diamond industry - the launch of the fully digital GIA Diamond Dossier, the most widely available diamond grading report in the world.
Yellow Sapphires with Unstable Color
A lab in Bangkok shares study on color stability in yellow sapphire.
An Update on Sapphires with Unstable Color
Crystal inclusions in a natural diamond resemble a unique scene.
GIA 团队与 Alan Revere（阿兰·里维尔）合作改进研究珠宝学家 (Graduate Jeweler) 课程
作为宝石学教育、研究以及以科学为基础的宝石鉴定与分级服务方面的领导者，GIA 与金匠大师兼备受赞誉的珠宝设计师 Alan Revere（阿兰·里维尔）开展合作，以期改进 GIA 的研究珠宝学家 (Graduate Jeweler) 课程。
GIA 研究人员展示新发现
11 月 1 日至 3 日，美国宝石研究院在加州卡尔斯巴德的 GIA 全球总部召开第 16 届年度研究会，100 名 GIA 研究员、知名学者、独立行业专家以及 GIA 理事和高管通过现场和虚拟参会。
Cat’s-Eye Paraíba Tourmaline with Copper Inclusions
The Tokyo laboratory examines a Paraíba tourmaline with chatoyancy caused by copper inclusions.
Fraudulently Inscribed Synthetic Moissanite
The Mumbai laboratory finds a fraudulent GIA inscription on synthetic moissanite.
Gems on Canvas: Pigments Historically Sourced from Gem Materials
Explores the use of gem materials as pigments in works of art, from the earliest cave paintings to the modern era.
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