Beautiful Australian Opals

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About Opal
Getting Started
Base Color
Consistency and Directionality
Cut, Inclusions and Weight
Fire Color
Doublets and Tripletts
Fire Pattern
Glossay of Terms
Natural, Synthetic, Etc
Myths and Legends
Opal Books
Opal Care
Opal Evaluation
Opal Pricing
Some Large and Famous Opals
Types of Opals


Fire color is the term for the color flashing out of the opal and caused by the optical phenomena called diffraction. Since these colors are produced by light, they can be all the colors of the rainbow.

There is an interesting physical phenomena in fire color. Some splashes of fire change color as you move the opal. In effect, you are moving up an drown the color spectrum as the angle of light changes. Other splashes of fire keep the same color but move across the surface. These color changes are what make opal so fascinating.

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