4.86 Ct 3D Wood replacement opal Inner world 27 Ct wood replacement opal

27 Ct wood replacement opal in a classic squarish shape

A small and bright blue boulder opal

We cut it into a circle to give it a a modern edge

Our “wood replacement” opal is truly exquisite

A beautiful black boulder opal with bright greens and blues

4.86 Ct 3D Wood replacement opal Inner world 27 Ct wood replacement opalA lovely 4. 86 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