that depends on the size of the ring. if the ring were pure gold, the density would be 19.30 g/cm³. lets say you have a size 7 ring, which is 1.73 cm in diameter. if the ring has a thickness of 3mm and a height of 1 cm, the volume of the ring would be roughly 0.5cm³. 19.3x0.5=9.65g