Black Onyx and Black Spinel Pendant Fashion Necklace Jewelry for Women A round black onyx stone sits in the center of the pendant and is surrounded with sparkling round-cut black spinel stones The pendant measures 27 mm long and 15 mm wide Includes an 18 inch sterling silver box chain with spring ring clasp Be sure to check out our other freshwater pearl and gemstone jewelry, available in a variety of styles at shoppearlzocean.com!