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4 mm is it also a very versatile size
20 mm thick
A lovely pentagon boulder opal with a rolling bright blue and green flash
84 Ct oval crystal opal
Their round shape and swirly patterns remind us of two beautiful planets
3.93 Ct 3D Wood replacement opal Type_Pair 4 mm is it alsoA beautiful 3. 93 Ct wood replacement opal in a lovely 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
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US$ 119.00
