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A fun blue/purple heart boulder opal
98 Ct scarab carving from crystal opal
21 Ct boulder opal is a rare gem that showcases bright pink and green with a black body tone
A beautiful 4
84 Ct larger teardrop boulder opal pair is perfect for creating elegant earrings
6.96 Ct 3D Wood replacement opal Type_Pipe A fun blue/purple heart boulderA lovely 6. 96 Ct wood replacement opal in a soft half circle shape. 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
US$ 18.53
US$ 1975.00
US$ 18.50
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