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Boulder Opal pieces from Central Queensland.

This material is renowned for the beautiful pattern found within the stone.
Some great seams of opal that would be perfect to practice on.

Hopefully, you find a few gems

The pieces are wet to bring out their colours.
The Ruler is measured in millimetres.
Measurements are generally rounded down and approximate.

Colour: Please note the camera has been white-balanced to give truer colours NO Photo Shopped enhancement.