4.65 Ct wood replacement opal Mine_Yaraka 03 Ct wood replacement opal

03 Ct wood replacement opal in a hexagon shape

green and blue boulder opal

with bright green colours

A lovely free-form wood replacement opal

green and blue colours

4.65 Ct wood replacement opal Mine_Yaraka 03 Ct wood replacement opalA pretty half circle wood replacement opal with light green and purple colours. 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