加利福尼亚州卡尔斯巴德 – 2021 年 12 月 2 日 – 给人们的生活带来喜悦的钻石以及 GIA 的钻石分级专家报告所激发的信心是 GIA 十多年来首次全球消费者营销活动的核心。

柘榴石是一组密切相关的矿物，从而使该宝石几乎拥有每一种颜色。

世界著名的宝石鉴定专家带领美国宝石研究院 (GIA) 鉴定所 的服务走在宝石学研究的最前沿。

用显微镜评估视觉识别的高温高压处理钻石，观察刻面交接处强烈的荧光。

探究硬玉和绿辉石的区别，以及美国宝石研究院关于这些宝石定义的现行政策。

Learn about the factors that make alexandrite so desirable.

Aquamarine is the green-blue to blue variety of the mineral beryl.

海蓝宝石因海水而得名，其清新水润的色调如同畅游在清凉的泳池中。

Learn about the factors that make citrine so desirable.

Learn about emerald's durability and how to care for your emerald jewelry.

Learn about garnet's durability and how to care for your garnet jewelry.

Thousands of years ago, red garnet necklaces adorned the necks of Egypt’s pharaohs, and were entombed with their mummified corpses as prized possessions for the afterlife.

Emerald’s lush green has soothed souls and excited imaginations since antiquity.

Learn about the factors that make garnets so desirable.

Writers have compared opals to volcanoes, galaxies, and fireworks. Admirers gave extraordinary opals poetic names like Pandora, Light of the World, and Empress.

Learn about amber's durability and how to care for your amber jewelry.

Amber is probably best known for its insect and other types of inclusions.

Learn about amethyst's durability and how to care for your amethyst jewelry.

Learn about aquamarine's durability and how to care for your aquamarine jewelry.