I’m originally from Switzerland, where it is the custom that, when widowed, you wear not only your own ring, but that of your late husband as well (having it taken in to fit, of course). So if you see a woman wearing two rings, you know she’s widowed. I remember that after my father died, my mother had her own, my father’s, and my grandmother’s wedding rings refashioned into a treble, knot-like ring which looked very pretty. As for myself, I only wear my wedding and engagement rings, as my husband didn’t wear one when he was alive.