Estate Opal and Diamond Ring. 14k, white gold mounting features a vibrant 6 carat opal with flashes of green, blue, violet and red. The opal is bezel-set and surrounded with a high polished frame containing 0.75 carats of evenly spaced prong-set brilliant-cut diamonds.
The Tiffany Opal Necklace, designed by L.C. Tiffany circa 1929. This pendant features a 30" 18kt gold chain, green demantoid garnets (Russia), and black opals (from Lightning Ridge, Australia). The black opals have a great blue-green play of color (a.k.a. opalescence).