4mm blue moissanite is set in an original frame. The bright blue color and beautiful shine brighten up the face. Moissanite is a mineral discovered in the remains of a meteorite that fell from space 50,000 years ago. Its beautiful, eye-catching sparkle is very attractive. It has a higher refractive index than natural diamonds and is said to shine about 2.5 times brighter. Natural moissanite is extremely rare, but thanks to the success of creating it artificially in the United States, it is now possible to wear its brilliance on your own. It also has excellent durability, making it perfect for everyday use. [ 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. * Please note that there may be some variation in color, texture, and pattern. Materials Platinum 900, Moissanite (Blue) Size Height 4.2mm, Width 4.5mm * The lengths above are approximate. Product ID: 3872234