Mellochrysos

Mellochrysos was a vivid yellow variety of zircon found in large crystals in the Realms.

Description
These semi-precious stones were seldom cut, but rather polished and mounted in metal claw settings for rings, brooches, and knife hilts. It was hard and when left in crystal form resisted chipping. A typical specimen had a base value of 50 gp.

Also see

 * Jargoon
 * Malacon
 * Zircon