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Rough shaped split pair of boulder opal from Koroit, Queensland
The ironstone material that the opal is deposited on is generally quite hard in comparison to other fields.
Being based on such a hard material generally allows the stone to be polished to a higher lustre.
Rule in Millimeters
Measurements are generally rounded down and approximate
The material is generally photographed wet to bring out the highlights of the stone.
Colour: Please note the camera has been white-balanced to give truer colours NO Photo Shopped enhancement