A 14 carat (585/oo) yellow gold agate seal carved with a bust of a woman with black enamelled eyes, wearing a jacket with diamond buttons, a tiara and a necklace of 8x8 rose-cut diamonds, on an oval seal with rough decoration, holding an intaglio on agate depicting the chariot of Neptune from the Roman period. The seal is mounted as a pendant and held in place by a rotating clasp decorated entirely with diamonds. Height : 5 cm Gross weight: 22.57 g (the intaglio is diagonally split)