This is aquamarine with a rainbow effect! It has high transparency, and you can see the shiller effect! I checked at a certain stone shop, and the same stone was being sold for ¥6,000! I was able to get this one in at a good price, so I can offer it at a lower cost! Both ends feature Swarovski beads, natural pearls, and fine crystal, and I paid attention to the design. It's cute and I recommend it! ^^ Inner diameter 15.5cm