Choose a special letter that means something to you - - The connector is an O ring not the connection shown in the photo attached to the charm.
Our charms are dainty and delicate therefore they are made with a different process than our regular everyday pieces. With that being said we recommend a little more care with these pieces. Only use soft cloth for cleaning and avoid harsh chemicals, cleaning agents, perfume, etc. as that may cause discoloration as with any soft metals.