All Alex and Ani Bracelets have stamps on the back of the large medallion, only one the "om". Had the stamp on the back, the letter "d" medallion on the other one has no stamp, the appears through the back and is not Stamped and is very thin. I have been so busy with School that I threw out the info for this item and packing slip so I can't return it. I buy these online because I rarely have time to get ti their store. But will take this down once it is replaced