Large solid Black Opal with red, blue, and lavender colors. Bezel setting with hammered texture frames. Design Details GOLD - 14k yellow GEMSTONE - Black Opal CUT - Diamond cabochon CARAT - 24.30 ct. SIZE - 20x31 mm OA DIMENSIONS - 24x35 mm CHAIN- 2mm heavy rolo w/lobster claw OA LENGTH - 18 1/2"