My ring is a Tungsten Carbide 5mm Comfort Fit Domed Wedding Band Ring
Here is an image of this ring:
My wife got Titanium 3mm Comfort Fit Wedding Ring
Here is an image of this ring:
I like this idea. The Tungsten ring looks very similar to the Platinum ring, but is much cheaper, and, even though I rarely loose things, because it is cheap, I don't need to be worried all the time about loosing it.