4.86 Ct 3D Wood replacement opal Inner world 28 Ct wood replacement opal

28 Ct wood replacement opal in a classic rectangle shape

A beautiful black boulder opal with bright greens and blues

A beautiful small 3

A lovely small boulder opal from our inexpensive range

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

4.86 Ct 3D Wood replacement opal Inner world 28 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