Ring 'Calla' with fine sapphire, ca. 0.5 ct in light Ceylon colour, 14K yellow gold, 9.7 g, ring: ring size 53, open ring shark, W: approx. 3.6 - 25.4 mm, with casting pores inside, 2nd half of the 20th century, minor signs of wear, with hallmark, illustration of a calla lily flower.