Thank you for viewing! This is a ring made of Itoigawa jade. It's a deep blue color from the Nyukon-zawa mine. The ring size is size 7. The size cannot be changed. The material is sv925. If you have any questions, please feel free to ask in the comments. I have other items for sale, and I can combine shipping, so please let me know. I hope you will consider it. Thank you. #ItoigawaJade #Itoigawa #Jade #Hisui #Jade #NyukonZawa #Blue #NaturalStone #Mineral #RawStone #Stone #Gem #Ring #Jewelry #Accessories #New #Unused #FreeShipping