Behold, the eighth wonder of the world! At least that's what it feels like when I look at this dreamy matrix opal charm. 14k yellow gold 14.91ctw matrix opal.29ctw diamonds Enamel star detailing on back of charm Charm measures 31mm x 20.5mm x 9.7mm Inner diameter of clasp measures 4.6mm x 3.3mm Enhancer clasp with safety