Andamooka Opal Silver Necklace #1 Location_Asia caused by a thin film

caused by a thin film of Goethite coating the Calcite

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in which the Calcite matrix is gradually dissolved to reveal the fascinating structure of the Chalcedony underneath

Andamooka Opal Silver Necklace #1 Location_Asia caused by a thin filmThis beautiful Andamooka Opal pendant is set in 925 Sterling Silver and comes with 18 inch snake chain presented in a gift box with a polishing cloth. Dimensions are the size of the pendant, and do not include the bail. Andamooka Opal is from Australia, and is a matrix opal, ie the rainbow sparkles of the opal are embedded within the rock matrix. When mined, Andamooka Opal is hard to see because the rock it sits within is light coloured, so most