An 18ct gold and platinum Art Deco sapphire and diamond dress ring, a 3.95ct dark violet blue oval mixed cut sapphire (eye clean), rub over set, surrounded by eighteen old European and single cut diamonds (Colour G-I, Clarity SI1-I2) grain set, with an old Swiss cut diamond to each rounded corner (Colour G-I, Clarity VS2-SI2), further surrounded by fifty-six calibre cut medium dark blue sapphires, channel set, two absent. TSW. 4.85cts. TDW. 0.84cts. Ring size P. Old