Premium Calibrated Opal Round Doublets 4mm (priced individually)$22.50 In stock Premium Calibrated Opal Round Doublets 4mm (priced individually) quantity Add to cart Description Description These opal doublets measure 4 x 4 x 1.5 mm and have prominent green/blue colouring. Related products Sale! Coober Pedy Crystal Opal Parcel 2.90 cts $210.00 Original price was: $210.00.$200.00Current price is: $200.00. Add to cart Coober Pedy White Opal 6.35 cts $250.00 Add to cart Andamooka Opal Parcel 6 cts $150.00 Add to cart