Ring with diamond and onyx, diamond approx. 0.04 ct, STW (I-J)/P, onyx approx. 8 x 4.5 mm, 14K white gold, 2 g, ring size: 52, W: approx. 1.1 - 11.9 mm, mid-20th century, minor signs of wear, handcrafted work, diamond mounted on onyx, with decorative engravings and millegriffes.