2.13 Ct wood replacement opal Type_Pair 50 x 47 mm

50 x 47 mm

35 Ct wood replacement opal in a free-form shape

green and blue boulder opal

A beautiful black boulder opal with bright greens and blues

2.13 Ct wood replacement opal Type_Pair 50 x 47 mmA lovely small 2. 13 Ct 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