This is a discontinued Tiffany bamboo ring that has become increasingly popular in recent years. It has an inner diameter of 18mm, which is likely a size 16. Please check the images. It's a size that can be worn by men as well. I'm including a pouch, although it's from another ring. There are some scratches as it is used. Thank you for looking. - Brand: Tiffany & Co. - Material: 925 Silver Color: Silver Size: 16 TIFFANY&Co. tiffany Bamboo bracelet Vintage Open heart 925 silver