Opal Lexicon

Welo Opal: Ethiopia's Bright Precious Opal

Welo opal has turned the jewelry market upside down in a few years. Few finds have made genuine opal fire accessible to so many people as the deposits in...

Black Opal: The King of Opals

Black opal is the rarest and most expensive opal in the world: a deep-dark gem in which red, green and blue flare like a thunderstorm at night.

Types of Opal at a Glance: Every Opal Compared

There are many types of opal, and hardly any gemstone is as varied as opal. Where each type comes from, how they differ, and which one suits you best, you'll see...