Our product is 925 Sterling Silver. Natural Turquoise Stone is Used. Since it is a natural stone, there may be differences in the color tone of the stone. Size of the stone: Width 10 mm, Length 14 mm. If you do not know your ring size, we recommend that you find out before ordering. We would like to inform you that you should send the product returns carefully in the same way we sent it to you. Returns of damaged products will not be accepted.