1.99 Ct 3D Wood Replacement opal Crystal 87 Ct wood replacement opal

87 Ct wood replacement opal in a classic oval shape

A lovely small green and blue stripy boulder opal

49 Ct wood replacement opal in a teardrop shape

A lovely green and purple boulder opal pair that really sparkle in the sun

A beautiful large green and blue wavy heart boulder opal

1.99 Ct 3D Wood Replacement opal Crystal 87 Ct wood replacement opalA lovely 1. 99 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 meticulous