AN 18K OVERSIZED THREE COLOR QUARTZ PENDANT / BROOCH: 18K yellow gold custom pendant contains emerald cut crystal quartz. Weight: 165.92 Ct. Approx. Pear shaped green quartz. Weight: 112.97 Ct. Approx. Triangle shaped amethyst. Length 3''. Weight: 7.50 Ct. Approx. All stones are prong set. Mounting Weight: 22.3 grams Approx.