Spectacular Black Opal, Lightning Ridge, New South Wales, Australia. Estimate US$ 50,000 - 70,000 (€46,000 - 65,000). Photo Bonhams.

A thick, plump and delectable specimen of opal fashioned as a high-domed cabochon. Dominated by reddish-orange flashes of color, interspersed with electric blue and purple and splashes of green. With some play-of-color on the reverse, the stone retains some semi-black potch to the reverse as well which enhances the vibrancy of the colors.Weighing approximately 47.15 carats and measuring approximately 33.02 x 22.05 x 11.40 mm

Bonhams. THE WORLD OF OPALS, 23 Nov 2015 15:00 PST - LOS ANGELES