My guy and I are shopping around for our wedding bands, and I was researching the history of this stuff.... it's really interesting! Here's a great resource for finding out more about customs and cultural beliefs-did you know the Irish believed that if your bands weren't made of gold, the marriage would spilt up? Thought I would share it with my Knotties:
http://www.jewelry.com/education-bridal-wedding-band-history.shtml