Vintage Mid-Century Coral Ring in 18K Yellow GoldVintage Mid Century Coral Ring in 18K Yellow Gold. This Mid Century cocktail ring features a large cabochon cut piece of red coral set in 18 karat yellow gold. The coral color looks lovely set in the rich 18 karat yellow gold, and the stone almost leaps out of the beautiful basket with multiple claw style prongs holding it. A rather chunky cocktail ring with a loud presence that will turn heads and give out a positive vibe!