Amber Teething bracelets/necklaces, myth or miracle?!?!

I've been hearing a lot of hype about these amber teething bracelets/necklaces. Has anyone used them or know anyone who has?! What are your opinions? Are they complete BS or are they something worth looking into?

    Worked for us, we took it off at night and put it on during the day, seems to keep her calm.
      I've heard nothing but good things about them. Haven't tried them personally.
      About Jennifer Noyce
      Current: Norway, Michigan
      Birth: September 29
      On since: Apr 9, 2014
      A first time mommy-to-be. I'm married to a wonderful man, David. We own our own semi and David drives so unfortunately he is on the road most of the time. David has 2 kids, Ty (6) and Amelia (5) and they are equally excited that we are having a baby!!