Bundle sale. Inner diameter is about 5.7-5.9cm. I had a certificate of authenticity at the time, but it got scattered during a move. However, I guarantee that these are completely unprocessed and undyed. Yellow jade is rare. Neither has any noticeable cracks. If you'd like to see more detailed photos, please comment. Since these are natural, unprocessed, and undyed, there may be some color unevenness, cracks, inclusions, and scratches, but I hope those who understand jade bangles will consider purchasing. I guarantee that these are Grade A natural jadeite, completely unprocessed, so you are welcome to have them appraised before leaving feedback. Thank you.