Moissanite is a mineral discovered 50,000 years ago in the remains of a meteorite that fell from space. Its beautiful, eye-catching sparkle is attractive, and it has a higher refractive index than natural diamonds, and is said to shine about 2.5 times brighter. Natural moissanite is very rare, but by successfully creating it artificially in the United States, it is now possible to wear its sparkle. It is also very durable, making it perfect for everyday use. This necklace features a large, particularly sparkling moissanite and three moissanite stones set to accentuate its sparkle, making it a very satisfying stone-using necklace. * TAKE-UP products are Made in Japan, handcrafted by Japanese craftsmen. Materials 10K Yellow Gold, Moissanite Size Height 7.5mm, Width 4.5mm[Chain] Length 40cm (with adjustable link at 37cm) * The lengths above are approximate. Product ID: 2572153