Single Add-A-Pearl Starter Necklace 14K Yellow Gold 6mm14k yellow gold 6mm single add a pearl starter necklace. This starter necklace is designed to begin a 6mm add a pearl necklace. One of our most popular programs, add a pearl necklaces start as a single pearl necklace, often gifted at a childs birth, and then grow with her over the years as pearls are added one at a time. We sell single 6mm pearl cards for $20 and those pearls can be added to the necklace for free, one inch at a time. For more