While no one is going to stop you from doing this we would strongly recommend that you should not use a tungsten ring for your wedding band(s) for a number of reasons: 1) tungsten can not be cut off in the event of emergency - specialist 'ring cracking' equipment is required to break it. 2) tungsten cannot be resized - As we age, even if we don't change weight significantly, our fingers and joints do change shape. 3) the plating on a gold-plated tungsten ring will eventually wear off and be uneconomic if not impossible to have replated.