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A beautiful 5
Opal ID 3500 is a dreamy pastel boulder opal
A lovely striped heart boulder opal
45 carat boulder opal has a rare combination of colors including orange
A lovely green and blue rectangle boulder opal
5.12 Ct wood replacement opal Tucson A beautiful 5A rare and unusual dark purple 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 process results in
US$ 102.69
US$ 19.95
US$ 102.69
