The stone is charoite. It has a very beautiful purple and black marble pattern. Silver 925 The size is about size 13 (Japanese ring size). I'm selling it because it no longer fits, but I'm considering having it resized, so I may suddenly lower the price. It was purchased at a department store event, and I think there was a warranty card or something similar (I will include it if I find it). I haven't worn it much, but it is a used item. Only those who understand this are welcome to purchase. Instant purchase available ⚪︎ silver925 sv925 Ring, natural stone, charoite