Nothing. But I won’t lie and say I wasn’t curious if the magents would cause the iron deposits in my organs from shredding me on a cellular level. Doc said not to worry so I didn’t.
Source: I have hemachromatosis. Had an MRI done with a ferritin count of 2400. For comparison: normal adult males usually have a ferritin count of 24-336.
My wedding band is titanium and wood ($17). My wife’s is silver and cubic zirconia cast as Nenya, Galadriel’s ring from LotR and made by WETA Workshop, who did the movie props ($75).
So much cooler than gold and diamonds => 3 months salary, at least for us.