Personalize an infinity necklace with birthstones with the popular 2 Stone Custom Sterling Silver Infinity Birthstone Necklace. This romantic necklace features a 1 inch silver infinity charm that artfully hangs between a chain. You can personalize the infinity charm by placing two birthstones at the center of the infinity symbol. Choose to have you and your love's birthstone placed inside the symbol, or have the birthstones of your two children. Each personalized infinity necklace is different, because it is up to you which .02 carat cubic zirconia birthstones are featured.