gold ring with onyx and diamond

An 18 carat yellow gold bombé ring with a surface division of which 3 surfaces inlaid with black onyx and juxtaposed three surfaces with brilliant cut diamonds (0.95 ct in total). Signed and numbered: Van Cleef & Arpels, C504 1X 13.

weight: 6.2 g
ring size: 15.25 mm / 4.5 US