6.27 Ct 3D Wood replacement opal Inner world A lovely green and purple

A lovely green and purple wood replacement opal

27 Ct wood replacement opal in a classic squarish shape

if you are after a matching heart set

A beautiful green and purple striped boulder opal

6.27 Ct 3D Wood replacement opal Inner world A lovely green and purpleA 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