The Jade Enigma
An examination of the various simulants of of nephrite and jadeite, and how to separate them from jade.
The Cutting Properties of Kunzite
The cutting of a one-kilo kunzite crystal demonstrates the problems inherent in working with this stone.
圣卡洛斯橄榄石 (英语)
Marketed throughout the world, San Carlos material is often confused with, and sold as, peridot from localities that are better known and documented.
Lapis-Lazuli from Sar-E-Sang, Badakhshan, Afghanistan
Photographing Inclusions
A discussion of the techniques important in producing top-quality photomicrographs.
Ruby in Diamond
Heat Treating Ruby and Sapphire: Technical Aspects
A review of heat treatment methods available for use on natural or synthetic corundum.
哥伦比亚的祖母绿 (英语)
A comprehensive review of the history and geology of Colombian emeralds together with descriptions of some of the most famous gems to come from this locality.
Color In Gems: The New Technologies
A discussion of work being done to enhance color in gemstones, as well as techniques used at the California Institute of Technology to detect whether colors are natural or enhanced.
Artificially Induced Color in Amethyst-Citrine Quartz
A new and rather unusual gem material and possible treatments are discussed.
Zabargad: The Ancient Peridot Island in The Red Sea
A report on the island of Zabargad and the peridot for which it is known.
The Hidden Beauty of Amber: New Light on an Old Subject
The surprising inner world of inorganic inclusions in amber is explored through the use of polarized light and microscopic techniques.
GIA 理事会欢迎两位新成员
在近日于加利福尼亚州卡尔斯巴德召开的会议上，美国宝石研究院 (GIA) 理事会宣布新增两位成员，即 Ben Bridge Jeweler 总裁兼首席执行官 Lisa Bridge（丽莎·布里奇）和科罗拉多矿业学院 (Colorado School of Mines) 地质学教授 Wendy Bohrson（温迪·波尔森）博士。
GIA于加州卡尔斯巴德举行环球研究团队会议
理事会成员约翰‧威利（John W. Valley）博士退任
加州卡尔斯巴德 ─ 2023年11月20日 ─ 由2014年起担任GIA理事会成员的约翰‧W‧威利（John W. Valley）博士，11月初在加州卡尔斯巴德举行的年度例会后正式退任。GIA理事会及领导高度表扬其在任内作出重大贡献，宣布以其名字命名一项GIA奖学金，以示敬意。
Amit Dhamani被任命为 GIA India Laboratory Pvt. Ltd. 总经理
The board of directors of GIA India Laboratory Pvt. Ltd. (GIA India) has appointed Amit Pratihari as managing director, responsible for all aspects of GIA India’s gemological laboratories in Mumbai and Surat, as well as the GIA India school in Mumbai.
GIA招聘会10月6日在加州卡尔斯巴德举行
宝石学研究、教育和鉴定所服务的先导权威GIA美国宝石研究院，将于10月6日星期五在加州卡尔斯巴德的全球总部主办Powered by GIA招聘会，带来非凡体验并提供就业指导，参加者可深入交流，互相启发，并有机会与行业内知名企业的招聘人员会面，拓阔人脉圈子。
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