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Opal ID 3500 is a dreamy pastel boulder opal
A sweet extra small boulder opal heart pair
A beautiful rainbow pair of heart boulder opals
22 Ct wood replacement opal with a long narrow triangle shape
A beautiful small 3
5.02 Ct carved flower opal πΈ Colour_orange Opal ID 3500 is aA beautiful small 5. 02 Ct flower carving from wood replacement opal. What is Wood Replacement opal? Opal formation commences when silica dissolves in water. At our Russells opal mine we have found that this silica solution occupies a void most probably left by decaying tree roots or branches. In cases where the silica infiltrates organic material before complete decomposition occurs, the organic molecules are replaced by silica. This remarkable
