Art Deco diamond & sapphire ring in a mille grain setting mounted on a later 18ct yellow gold shank, 5 mm dia. Old mine cut diamond 0.40ct, 8x old mine cut diamonds =0.09ct. Round purple blue sapphire (Ceylon type) 3.9 mm dia.0.23ct each = 0.46ct total. (all estimated in the shank). Item weight 4.6 grams, ring size M