in the depths of winter, we are invited to find warmth in the magic and wonder that surrounds us. our serendipity february birthstone charm marks the moment with amethyst, which is said to promote clarity, balance, and spiritual insight. add it to your favorite necklaces and bracelets to embrace the magic and wisdom within you. this charm fits over most necklaces and the internal diameter is approximately 2.8 x 2.2 mm.