I posted this information on another tread, but I think its more appropriate here.
I had 2 of these tags made for Desi. The heart with her name in the middle surrounded by small pink crystals and the star with the white crystals. On the back is all her information (address, phone number, etc.) I love them. Desi is now 6 months and she's been wearing them since she was 3 month and none of the crystals have fallen out. Its coated, so it made for everyday wear. I paid approx. $40 for each and they still look like new.
http://www.animalstars.com/jeweled_tags.html