I found this while cleaning out my parents' house ^_^ I'm not sure how to use it, but I think it's a pair of cufflinks. The glass part looks purple or navy blue depending on how the light hits it, and it's beautiful ^_^ One of the two has a bent back. Please check the third photo. There are fine scratches on the back. Please consider this item, understanding that it is a used item and has been stored at home ^_^