Quality Cut/Polished Koroit Opal Cab 33.78cts Double sided Pattern/Fires Queensland AustraliaI have for sale a very nice Cut Polished Koroit Opal Cab Freeform. This one weighs 33. 78cts and is 35x21x5mm. It is double sided, Fires and patterns across the piece. Very different on each with multicolour fires in veins and patches of opal. Striking pattern too with the red ironstone base and black lined veins. It will make a very nice pendant or add nicely to a collection. Thanks for looking,.