YEARS 1935 DIAMOND JEWELLERY BOW BROOCH The brooch represents a natural ribbon knot entirely pierced with lace. The whole is paved with old-cut and round diamonds. Mounted in platinum and 18K white gold. French work. Gross weight: 13.84 g. Dimensions: 4.8 x 4.2 cm. A diamond, platinum and 18K white gold knot brooch, circa 1935. French assay mark. Gross weight : 13,84 gr. Dimensions : 4,8 x 4,2 cm.