YEARS 1920 SAPPHIRE RING The ring is centred on a cushion sapphire surrounded by small brilliant-cut diamonds and calibrated sapphires in the corners. Set in 18K white gold. French work. Gross weight: 3.56 g (sapphire is chipped) Sapphire dimensions: 10.62 x 8.54 x 4.41 mm approx. Sapphire weight: approx. 3 to 3.50 mm. A sapphires, diamond and 18K white gold ring, circa 1920. French assay mark. Gross weight : 3,56 gr. (chiped sapphire) Sapphire dimensions : 10,62 x 8,54 x 4,41 mm approx. Sapphire weight : 3 to 3,50 mm approx.