Retro Cabochon Opal Cocktail Ring in 14K.  This enchanting cocktail ring comes to us from the Retro Era and features amazing engravings in 14 karat yellow gold and a .57 carat cabochon cut opal. The opal is rather tall, which enhances the depth of color, and is set in a gorgeously engraved hexagon section. The intricate engravings continue down each side of the shoulders and speak to the level of care and craftsmanship in many Victorian jewelry works.