Modern gemologists use the word “jade” as a generic term for both nephrite and jadeite. These minerals have been linked throughout history.

Peridot has always been associated with light. In fact, the Egyptians called it the “gem of the sun.”

Blue sapphire belongs to the mineral species corundum. It can be a pure blue but ranges from greenish blue to violetish blue. The name “sapphire” can also apply to any corundum that’s not red and doesn’t qualify as ruby, another corundum variety.

纽约校区在校申请

2025年纽约校区教育目录

James Sowerby（詹姆斯·索尔比）的《英国矿物学》(British Mineralogy) 及其对 Martha Proby（玛莎·普洛比）和 19 世纪科学界的影响。

List of books pertaining to the Tablet to Tablet exhibit presented by theThe Richard T. Liddicoat Gemological Library and Information Center, November 2011-August 2012, GIA, Carlsbad, California

In this exclusive interview with GIA conducted at the 2013 Tucson Gem Show, Groom delivers a highly instructive tutorial on the critical nexus between gemology and business.

根据 GIA 珠宝制造艺术讲师制作的教学视频学习各种技巧和要诀。

Learn about the factors that make lapis lazuli so desirable.

Learn about the factors that make moonstone so desirable.