Three stones, infinite meaning. Celebrate your family, your story, or your favorite trio with the Three Oval Birthstone Necklace—customized just for you. A heartfelt keepsake you’ll wear every day. Birthstone dimension: 4mm x 6mm; Cable chain is 14 -22 inch long. Materials: 14k gold vermeil - 925 sterling silver as base metal Hypoallergenic, nickel, and lead-free; Tarnish resistant. Birthstones: January - Garnet February - Amethyst March - Aquamarine April - Moissanite May - Emerald June - Alexandrite July - Ruby August - Peridot September - Sapphire October - Pink Tourmaline November - Citrine December - Blue Topaz