Aren't they pretty. Want to add a little bling to your fur babies so they can be found if they are lost. We can engrave the back with the pets name and number. They are approximately 1" in size and can easily accommodate a small to medium dog or cat. You can use them for larger dogs as well. They are also suitable as decorations for bracelets, key chains, pendants, etc., all depending on your preferences and actual needs. They come in 12 different colors and oh that sparkle!!