Is it bad luck

to wear a ring after the stone has fallen out?

A friend told me it was, but I have never heard so before. Normally, I don't believe in silly little superstions. For the most part, I think we all have the ability to effect our luck for better or worse by the decisions we make in life. And yet, in my jacket pocket right now, I am carrying a hand of Miriam to ward off the evil eye. A friend gave that to me recently. Do I believe in its power as a ward? No, but still there it sits in my pocket.