I am pretty sure this isn't even Tungsten. My husband has broken 2 of them now. the first one he dropped in the garage and it shattered. The second one he put his had down on our granite counter top and it broke. You search any Tungsten websites and this ring can't be found. If it is tungsten, they realized how cheap it actually is and that is why overstock.com has them. nobody else will sell this ring.