Andamooka Matrix Opal 14cts – Treated, Large Pendant Stone A beautifully large Andamooka matrix opal weighing 14cts and measuring 16x28mm — an ideal size for a statement pendant. This stone displays the characteristic earthy matrix pattern with flashes of play-of-colour that make Andamooka matrix opal so distinctive and sought after. An absolute bargain at only $15 per ct! Specifications Weight: 14cts Dimensions: 16x28mm Type: Andamooka matrix opal (treated) Origin: Andamooka, South Australia Ref: #171 Notes Andamooka matrix opal is a naturally porous stone that has been treated using a well-known carbon process to enhance its play-of-colour. This is a widely accepted and traditional treatment for Andamooka matrix opal and does not affect its durability or beauty. Ethically sourced from Andamooka, South Australia. Contact Opal Essence for more information.