These earrings are made of iolite (March birthstone). Their deep indigo color is captivating. They are chess-cut to bring out their charm. The backside is also cut, giving them a deep sparkle that draws the eye. The square shape shines delicately, creating a cool, sophisticated impression. [ TAKE-UP's commitment to Second Earrings ] High-quality metal (18K Yellow Gold or Platinum) that is less likely to cause allergies Large friction back that doesn't fall off easily Thick post to keep the piercing hole stable Easy-to-grip top Wide variety of designs * TAKE-UP products are made in Japan, handcrafted by Japanese craftsmen. * We use natural stones. Please note that there may be some color variation. Materials Platinum 900, Iolite Size Height 5.5mm, Width 5.5mm * The lengths above are approximate.Product ID: 3444260