The only difference that I can see is that I used a product called Diamond Glaze as the adhesive on mine.
One more thing - the pics that I posted are of the 1.4 inch glass tile. There is also a smaller tile (about 1") that can be purchased. I don't think that either of these are any heavier than any other pendant I would wear. You would think that since they're glass they would be, but not so. I'll probably use the smaller tile for AbbyGrace because I think this size will be a little too big for her.