I know this thread is old. I was hoping you guys could help ease my worries. I just received my new mini bean today ordered directly from Tiffany's and it seems a little off. Can you tell me if there's a hallmark on any of your mini bean necklaces? Mine has nothing on either side of the bean whereas my open heart is signed on the back side of the heart. Also, the necklace arrived to me in multiple big knots and the clasp on it is broken (it won't close it just sticks open). This is the only negative experience I have ever had with Tiffany's. I intend to take it back but don't want to have them just fix the clasp if the whole thing is not authentic.