I know this has been resolved, but I lost the stone out of my engagement ring. Don't know what became of it. Noticed it was missing in the car one day on the way up to the beach. *sigh*. I was upset but decided that I couldn't dwell on it. We replaced it with a slight bigger one and a new setting.
My mom lost hers once and found it again a year later. She was in the bathroom and took it off to was her hands. She dropped it on the tile and heard a pling. We looked down the toilet and went through the whole bathroom. Nothing. One day a year later my dad was in the bathroom and conteplating what had happened. He felt under the toe space on the bathroom sink and realized that there was a open area on top it could have got in. He sawed it open and there it was! It had to have bounced at a certain angle. Very strange indeed.