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A large and stunning rainbow heart boulder opal with a purple-hue
perfect for a ring
lime green
10 mm thick
A lovely 2
2.51 Ct heart wood replacement opal Type_Single A large and stunning rainbowA beautiful 2. 51 Ct wood replacement heart 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 the
