Banger Big N1 Black 24.7cts - ISAAC’S OLD CUT Black Opal from Lightning RidgeA gorgeous solid black Opal from Lightning Ridge, New South Wales. Cut by Isaac Andretti himself during the early days of his Opal career! This stone displays sunflash red, orange, blue and green colouration in rolling flash patterns. Cut to a freeform oval cabochon with a quality finishing polish. Total weight 24. 7cts Area of Mine Lightning Ridge, New South Wales, Australia Dimensions 24mm x 19. 9mm x 4. 1mm Shape Freeform oval Colours red, orange,