Rhinestone Slide Letters for personalizing Pet Collars. Build your own pet collar with their name in dazzling rhinestones or chrome in block or script. Letter size is 10mm. Rodium plated and will not tarnish. Slide on Rhinestone letters for Pet Collars. Choose Rhinestone Block Letters, Rhinestone Script Letters, Pink Rhinestone Script Letters, or Chrome Letters. Please choose which style of letter, how many letters and which letters you will need. Personalized Pet collars are all the rage. They have become a collectable in that pet owners will collect seasonal charms and change the collars from season to season. It's fun and economical. We have hundreds of slide charms to choose from and some dangle charms too. If you have any questions or if we can assist in any way, please call us 888-901-2287.