几千年来，红宝石和蓝宝石（通常为蓝色，有时也有各种其他颜色）一直都是最重要的有色宝石。这些刚玉族矿物包含各种颜色类别，历史上原产于东南亚和中亚地区，如今由于它们珍贵稀有、色彩瑰丽、坚硬耐磨，已经成为备受追捧的宝石。由于有向分布的矿物内含物，刚玉可以呈现出星光和猫睛光，在不同的光源下观察时，有时还会变色。

For more than two decades, former plumber, welder and jewelry store-owner Dyber has been dazzling the world with his brilliant stone carvings ranging from sizes that fit in the palm of the hand to 12-lb quartz behemoths that can dominate a room.

A native of Kenya, Susie Kennedy teamed up with her husband in the 1990s to establish their place in the gem industry.

The first woman on the executive team and head of GIA’s innovative marketing and public relations efforts for nearly 30 years.

《唐顿庄园》的珠宝

The butterfly has enchanted jewelry designers for centuries because of its breathtaking beauty. There’s also another reason this “flying flower” has transfixed the imagination. The butterfly is a universal symbol of transformation.

钻石、 珍珠、 铂金、 对称。 这就是爱德华时代的珠宝 — 如今，仍广受现代设计师们的热捧。

Alexandrite, with its chameleon-like qualities, is a rare variety of the mineral chrysoberyl. Its color can be a lovely green in daylight or fluorescent light, changing to brownish or purplish red in the incandescent light from a lamp or candle flame.

Review of Wartski: The First Hundred and Fifty Years, by Geoffrey Munn.

Review of Cartier Royal High Jewelry and Precious Objects, by François Chaille.

Review of The Classic Goldsmith, by Mark Maxwell.

Review of Collector’s Guide to the Amphibole Group, by Robert J. Lauf.

The gem was named after the young Alexander II, heir apparent to the throne. It caught the country’s attention because its red and green colors mirrored the Imperial Russian flag.

莫桑比克北部的Niassa (尼亚萨) 和Cabo Delgado (德尔加杜角) 地区出产的红宝石

回顾 G·罗伯特·克劳宁谢尔德的开创性研究

最近讨论的铜扩散电气石存在性促使实验室探究这种可行性。

介绍几种用玻璃处理的红宝石，对这些玻璃处理的红宝石进行实验研究，验证该石头为玻璃粘结物。

GIA Gems & Gemology 《宝石与宝石学》 博物馆展览开幕式