Add our birthstone charms to your favorite chain. Our Birthstone Charms are crafted with genuine gemstones, representing each month of the year. Perfect as a special birthday gift, these charms add a unique element of celebration to your jewelry collection. - Charm size: 4mm x 6mm. - 14k gold vermeil or sterling silver setting. - Authentic gemstones and they have been our all-time best-sellers. - Hypoallergenic, nickel, and lead-free; Tarnish resistant.