My cousin bought me the chocolate gold bracelet, Item Number 684406, for my birthday last year. As soon as she saw it she was dubious about it, and when I put it on I could see why -- it looked as if it was dirty.
She took it away and bought me something else, but forgot to return it in time. (Thus QVC makes its money...) In the end, she gave it back to me. (I have a very nice cousin!)
It does look lovely in electric light, but not during the day. And the magnetic clasp is so weak that it keeps coming undone.
I imagine smooth gold pieces would look nicer, and I love the concept, but on the whole I can't recommend it.