6.27 Ct 3D Wood replacement opal Inner world 57 Ct flower carving from

57 Ct flower carving from wood replacement opal

27 Ct wood replacement opal in a classic squarish shape

A beautiful extra small green-blue boulder opal

Sits on its side in three different directions

A lovely large round boulder opal with a light body tone (background) and light pastel colours

6.27 Ct 3D Wood replacement opal Inner world 57 Ct flower carving fromA lovely 6. 27 Ct wood replacement opal in a classic squarish 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