Black Opal is a greenish type of opal with black mottling and gold flecks. Usually found in ancient hot springs, the gem is usually tumbled smooth and cut cabochon. The phrase in the North "Black as a black opal" means, effectively, not very black (or evil) at all, and is used to describe good-hearted rogues and similar individuals who would be embarrassed by praise. A typical specimen has a base value of 1000gp.
A trio of glistening opals, displaying a complete palette of bright pastel colors, alternate with a vertical row of four sparkling old-cut diamonds in this superb British three-stone ring, circa late-nineteenth century. The ring is finely crafted in rich 18 karat yellow gold and is further adorned with lovely scrolled shoulders. A many splendored beauty. 2,950.00 USD
A polychromatic palette of pastel colors emit a kaleidoscopic effect in this sizable (1 9/16 inches by 1 inch) opal brooch, with an estimated weight of 24 carats! The gorgeous and glistening gemstone is presented with understated simplicity in a white gold frame punctuated at each end with a small and lustrous seed pearl. Shimmer! (The frame is 14K, the pin stem is 18K.)