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

27 Ct wood replacement opal in a classic squarish shape

57 Ct flower carving from wood replacement opal

A lovely small boulder opal from our inexpensive range

36 Ct wood replacement opal in a classic squarish shape

A lovely green and purple wood replacement opal

6.27 Ct 3D Wood replacement opal Inner world 27 Ct wood replacement opalA 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