Add a charm or five to your birthstone or healing crystal necklace. 8.9 mm sterling silver disc. The charms are only available in silver. Birthstone and healing crystal necklaces must be purchased separately and I will add the charms. Or, you can purchase a 16” or 18” sterling silver necklace or 6 1/4” bracelet separately (with 1” extender chain) and I will add the charms. Charms can be purchased without necklace. Only available online.