Hi Dave, I have never heard of this superstition but am not a very
superstitous or traditional girl. I made my wedding sets for my
first and second marriage. The second is great and healthy and we
just celebrated our third anniversary last week. My first marriage
was a real party but not fullfilling. I don’t think it had anything
to do with the rings or the fact that his name was Dave! 
There is
alot of folklore and tradition that surrounds wedding rings (and
rings in general) that of course spans centuries. I was just
reading in the Martha Stewart wedding issue about rings. The
writer spoke of a ceremony where the man received a steel ring as a
sign of his strength and the women received a gold ring as a sign
of her fragility. Another ceremony had the man receiving a gold
ring and the woman receiving a silver ring because she was
considered of less worth than the man. My first set was in gold and
my current set is silver. I have found that making my own ring
really makes it more of a treasure and more personal. I do believe
in Karma though, but that’s a little different.-Carrie Nunes
@tnunes Tennessee USA