Brass ring. I purchased this from a handmade shop that does mobile sales. I've worn it a few times and stored it in a dark place. Purchased from Instagram → brass_ddv The color and luster of brass will change over time. With use, the luster will fade, and it will look matte. The shine can be restored by polishing. The size is about size 21 (Japanese size) when measured. The size can be adjusted by yourself! Please understand that this is a used item before purchasing.