All About Opals

Everything you always wanted to know about Opals is available right here!

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All About Opals
What are Opals
Where do Opals Come From
Opal Information
Types of Opals
Is it a Real Opal?
Buy Opals
Sell Opals
White Opals
Black Opals
Boulder Opals
Opal Cutting
Opal Glossary


Opal Boulder

Bounder opals have a solid layer of brown ironstone on the back of the stone.
They originate from large ironstone bounders, hence the name, underground.

Veins of opals form in the cracks and between the fissures on the bounders and
due to being very thin veins the cutter leaves a thin layer of ironstone to help
for a full sized stone.

Bounder opals are mined in Australia, as are most opals, and are considered the
second most valuable opals after black opals.

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