3.53 Ct 3D Wood Replacement opal Mine_Yaraka A lovely striped green and

A lovely striped green and blue boulder opal

A wonderful large teardrop light green and blue wood replacement opal

A small and bright blue boulder opal

A lovely small green and purple boulder opal specimen shaped like a large tooth or tusk

black body tone

3.53 Ct 3D Wood Replacement opal Mine_Yaraka A lovely striped green andA lovely 3. 53 Ct wood replacement opal. 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 process results in the meticulous