2.13 Ct wood replacement opal Type_Pair 24 Ct bright ocean boulder

24 Ct bright ocean boulder opal boasts a mesmerizing teardrop shape with stunning ocean green and blue tones

green and blue boulder opal

36 Ct oval boulder opal boasts an impressive array of colours which span the majority of its surface

50 x 47 mm

79 Ct wood replacement opal in a modern half circle shape

2.13 Ct wood replacement opal Type_Pair 24 Ct bright ocean boulderA 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