G&G in a Flash: Glowing Gems - What Does Fluorescence Tell Us?
Learn about the principles, mechanisms, and characteristics of luminescence that create the impressive and memorable glow of gemstones.
GIA GemKit 将宝石科学带入不同课堂
全球青少年学生现可通过 GemKids® 推出的 GemKit™ 体验宝石与矿物的奇妙世界。该在线信息活动宝库由拥有 90 年历史的全球宝石与珠宝教育领导者美国宝石研究院 (GIA®) 倾力打造。
GIA GemKit 将宝石科学带入不同课堂
全球青少年学生现可通过 GemKids® 推出的 GemKit™ 体验宝石与矿物的奇妙世界。该在线信息活动宝库由拥有 90 年历史的全球宝石与珠宝教育领导者美国宝石研究院 (GIA®) 倾力打造。
BASELWORLD（巴塞尔国际钟表展）“完美风暴”云业务
全球经济动荡已开始波及超级富豪 — 2015 年 BASELWORLD （巴塞尔国际钟表展）上顶级宝石、钻石和设计师珠宝产品的最大需求群体 。
Gianmaria Buccellati 基金会与 GIA 共同对珠宝设计新秀予以表彰
GIA 美国宝石研究院携手 Gianmaria Buccellati 基金会，于近期颁发了第八届 Gianmaria Buccellati 基金会珠宝设计卓越奖，以表彰全球优秀的 GIA 珠宝设计学生。
Shining a Light on Gemstone Properties: An Exploration of Photoluminescence Spectroscopy
Photoluminescence spectroscopy examines how gemstones absorb and emit light, uncovering crucial details about their identity and color origin through the detection of microscopic defects and impurities.
Glowing Gems: Fluorescence and Phosphorescence of Diamonds, Colored Stones, and Pearls
Photoluminescence imaging, which analyzes how gemstones glow under ultraviolet light, is an important analytical tool for detecting impurities, natural versus synthetic gems, and treatments through the observation of fluorescence and phosphorescence patterns.
Analysis of Gemstones at GIA Laboratories
GIA’s laboratories use advanced instrumentation and research to deliver accurate grading, identification, and origin determination for natural and laboratory-grown diamonds, colored stones, and pearls.
Infrared Spectroscopy and Its Use in Gemology
Infrared spectroscopy, specifically FTIR analysis, measures atomic vibrations to determine identity, cause of color, and potential treatments by analyzing how a gemstone absorbs infrared light.
Application of UV-Vis-NIR Spectroscopy to Gemology
UV-Vis-NIR spectroscopy measures how gemstones absorb and interact with light across the ultraviolet, visible, and near-infrared ranges, revealing crucial information about their composition, origin, and potential treatments.
Applications of X-Ray Radiography and X-Ray Computed Microtomography in Gemology
X-ray imaging techniques revolutionized pearl testing by enabling gemologists to distinguish natural from cultured pearls through detailed visualization of their internal structures, evolving from film-based systems in the early 1900s to today’s sophisticated digital equipment.
Metrology at GIA
GIA ensures accurate gemological measurements across its global laboratories through rigorous metrology practices, including systematic instrument calibration, validation from traceable standards, and continuous monitoring by trained staff to maintain precision and consistency.
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