Jade has been cherished through the centuries. To the Chinese it is the

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

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

Learn about the factors that make rose quartz so desirable.

アイオライトは、装飾品として、またおそらく航海の道具として使われた長い歴史がある。 – Robert Weldon

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.

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

Ruby can command the highest prices of any colored gemstone. The per-carat prices of fine-quality rubies have been rising consistently, many times breaking auction records. Click here and learn about the factors that make ruby so desirable!

Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire.

This document provides the publication information for Gems & Gemology

This document provides the publication information for Gems & Gemology

This document provides the publication information for Gems & Gemology