Purchased at the Hakone Open-Air Museum. I used it once and have kept it stored, but I haven't had the opportunity to wear it... If you are looking for a star-shaped crystal necklace, please consider this. The back has a polarized finish, and it changes color to white, yellow, and blue depending on the angle. I couldn't take a good picture, so I've included a reference image in the third photo. Although the shape is different, the material is the same. Please understand that this is a personal inspection and has been stored at home. Heart necklace Hakone Open-Air Museum Crystal necklace