These monogram charms are made of solid sterling silver. I first hand carved each letter in wax (like carving a piece of wood) them cast them into a silicon mold so that I can make them into sterling silver. Each charm is about 1/2-3/4 inch tall depending on the letter. They are so adorbs added with one of the fitness charms as your own emblem of passion or for your good friend's emblem. Handmade in NYC.