UNMOUNTED SPECTRAL COLORED BLACK & GREY OPALS
A collection of nine includes eight oval and one asymmetric gems refract full spectrum of colors from green-blue to red-orange, 50 cts. TW. The largest black opal weighs 11.39 cts., 22.67 x 15.46 mm.
Sale Price: $3,125
Estimate: $4,000 - $6,000
One is crazed. Some are on patch.