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A beautiful heart boulder opal with sea green and turquoise colours
blue and grey boulder opal specimen
A lovely small green and purple boulder opal specimen shaped like a large tooth or tusk
A lovely blue opal heart with a patch of pink
with a bright green tip
3.15 Ct 3D Wood Replacement opal Type_Pipe A beautiful heart boulder opalA lovely 3. 15 Ct 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 the meticulous
US$ 168.47
US$ 197.23
