2.65 Ct wood replacement opal Inner world At our Russells opal mine

At our Russells opal mine we have found that this silica solution occupies a void most probably left by decaying tree roots or branches

A lovely small boulder opal from our inexpensive range

Mined by Sue at her Yaraka opal mine in Queensland

13 Ct wood replacement opal

A beautiful black boulder opal with bright greens and blues

2.65 Ct wood replacement opal Inner world At our Russells opal mineA small purple wood replacement opal. 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 process results in the meticulous