Six Black Opals
Lightning Ridge, New South Wales, Australia
A large, oval cabochon with electric green flash on two ends, weighing 7.92 carats; an oval cabochon, weighing 4.75 carats; an oval cabochon, weighing 3.64 carats; an oval cabochon, weighing 2.41 carats; an oval cabochon, weighing 3.36 carats; and a circular cabochon, weighing 1.21 carats. Total weight approximately 23.29 carats. (6)