This cosmic Mid-Century cocktail ring features a 3.84 carat Harlequin Black Boulder Opal and diamond accents in 18 karat yellow gold. The Harlequin Opal features a fiery rainbow of colors in a unique mosaic pattern. The opal is bezel set and accented by eight (8) near colorless diamonds. The 18 karat yellow gold band is tapered and features thoughtful linear engravings on the trim of the shank.