Purchased last September and only tried on at home. Selling because I have no opportunity to wear it. The following is quoted from the official website: ↓ ↓ Pyrite Pierce SP_GPS Series: Rough Stone Regular Price ¥31,900 (tax included) Pyrite belongs to the isometric crystal group and is a stone that tends to form in cubes. The stone is processed only to smooth the sharp edges slightly, and it is finished with the atmosphere of how it was produced. Because it contains a lot of iron, it has a substantial weight even though it is small.