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 Mintabie Dark Crystal Opal Parcel 3.60 cts $125.00 Add to cart Sale! Lightning Ridge Semi Black Opal 2.00 cts $280.00 $260.00 Add to cart Lightning Ridge Semi Black Opal 5.50 cts $340.00 Add to cart