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

A review of Diamonds: An Early History of the King of Gems by Jack Ogden.

Review of Figures & Faces: The Art of Jewelry by Patrick Mauriès and Évelyne Possémé

Review of Geology: A Very Short Introduction by Jan Zalasiewicz.

Review of Masterpieces in Miniature: Engraved Gems from Prehistory to the Present by John Boardman and Claudia Wagner.

Review of Symphony of Jewels: Anna Hu Opus 2 by Janet Zapata with Sarah Davis.

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

Spinel is a good candidate for the title of “History’s Most Underappreciated Gem.” Some ancient mines that supplied gems for royal courts from Rome to China produced spinel, but it was usually confused with better-known stones like ruby and sapphire.

The Black Prince’s Ruby. The Timur Ruby. For centuries, spinel, the great imposter, masqueraded as ruby in Europe’s crown jewels

The spinel used in jewelry is a small part of a group of minerals that share the same crystal structure. Not all of them form transparent crystals suitable for jewelry use, however. Spinel offers a range of hues, from orange to intense “stoplight” red, vibrant pink, and all shades of purple, blue, and violet through bluish green.

This silicate of aluminum, iron, and magnesium has two distinctive features—a beautiful, violetish blue through slightly violetish blue hue derived from iron and a striking, eye-visible pleochroism.

Iolite has a long history of use as an adornment and possibly as a navigation tool.

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

Learn about the factors that make lapis lazuli so desirable.

Learn about the factors that make rose quartz so desirable.

Rose quartz jewelry was known to be crafted by the Assyrians around 800-600 BC. The Assyrians, along with the Romans, might have been the first to use this stone.

Rose quartz is one of the many quartz varieties used as a gem material. It gets its name from its delicate pink color, which ranges from very light (almost white) to medium-dark.

这本手册涵盖了求职成功所需的基本信息。

红宝石的名字来源于拉丁语 ruber，意思是“红色”。红宝石那耀眼的红色仿佛象征着宝石中燃烧着永不熄灭的火焰……

红宝石是刚玉矿物中最有价值的品种，蓝宝石也属于刚玉矿物。