How beautiful is this! Vintage custom pendant/brooch crafted of 18k yellow gold (stamped "18k","750"). Features a bright natural onyx cabochon. Accented with gorgeous carved mother of pearl. Adorned with natural round diamonds weighing approximately .50ctw. The diamonds are SI1-I1 in clarity and I-J in color. Secures with a custom bail and pin for wear. Measures approximately 1.5" x 1.5". Weighs 17.4 grams.