5.88 Ct 3D Wood replacement opal Type_Tiny This oval shaped boulder features

This oval shaped boulder features beautiful purple hues and a little caramel

95 Ct purple wood replacement opal with a teardrop shape

A lovely round purple boulder opal

including pink-red and orange-gold colours

67 Ct purple wood replacement opal with a teardrop shape

5.88 Ct 3D Wood replacement opal Type_Tiny This oval shaped boulder featuresA lovely 5. 88 Ct wood replacement opal in a classic rectangle 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