JONC BRACELET White gold, embellished with diamond-set knot motifs, set in the centre with a large rectangular cut emerald weighing approximately 23 cts in a diamond setting. Circa 1930. A diamond and 18k gold bracelet set with a rectangular step cut emerald weighing approximately 23 cts. Circa 1930. Preliminary L.F.G. report attesting: Brazil origin, moderate oil impregnation. RC : Dimensions of the stone: 19.7 x 17.0 x 10.3 mm approx. Internal dimensions: approx. 5 x 6 cm. Gross weight: 35.4 g (18k - 750).