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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
A lovely large round boulder opal with a light body tone (background) and light pastel colours
A beautiful 10
A very large and rare boulder opal from our Mt
blue and grey boulder opal specimen
86 Ct wood replacement opal in a classic rectangle shape
2.13 Ct heart wood replacement opal Colour_Green A lovely large round boulderA lovely 2. 13 Ct wood replacement heart 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
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