This is a silver-toned accent accessory. It's been stored in a drawer for many years. ☆ It was found in a straight state, so a lobster clasp and split ring have been added later. The inner diameter is about 3cm, so would it be suitable for an accent accessory or pet accessory? ★ The material is unknown, but it does not stick to a magnet. (The added lobster clasp and split ring do stick to a magnet) Since it is an old item, please refer to the photos and understand and agree before purchasing.