Moissanite is a mineral discovered 50,000 years ago from the remains of a meteorite that fell from space. It has a beautiful, eye-catching shine, and is said to have a higher refractive index than natural diamonds, making it about 2.5 times as bright. Natural moissanite is extremely rare, but by successfully creating it artificially in the United States, you can now enjoy its brilliance. It also has excellent durability, making it perfect for everyday use. You can fully enjoy the brilliance of moissanite and reflections with the presence of moissanite and the beautiful stone frame of the trilogy, which has the meaning of "present, past, and future." The arched shape when viewed from the side, similar to the curves of the body, makes the brilliance of moissanite stand out even more. * TAKE-UP products are Made in Japan, handcrafted by Japanese craftsmen. Materials 10K Yellow Gold (Posts and Friction Backs are made of 18K Yellow Gold.), Moissanite Size Height 9.0mm, Width 3.0mm * The lengths above are approximate. Product ID: 2684154