-These necklaces are hand-strung, authentic, sterling silver pearl necklaces made with oxidized sterling silver beads and sterling silver findings.- These are machine-made pearls, they are not made by the Navajo. - Comes with a 2” extender sterling silver paper clip chain to allow for variation in length. Listed length does not include the length of the chain. -Since the necklace is made from sterling silver, it is hypoallergenic. -While the necklaces are made from high quality materials, it is highly recommended to avoid wearing them while showering or swimming in order to ensure the longevity of their quality.