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A stunning purple 2
A wonderful rainbow rectangle boulder opal
Mined by Sue at her Yaraka opal mine in Queensland
long arch shaped boulder opal specimen with lovely pinks swirls and a strong white stripe
2.50 Ct 3D Wood replacement opal Parcel A stunning purple 2A stunning purple 2. 50 Ct wood replacement opal in a teardrop 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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