Southwestern .925 SU Sterling Silver Red Jasper Stone Scroll Band Ring*Size 5*

Southwest .925 SU Sterling Silver Red Jasper Stone Scroll Band Ring *Size 5* I am giving an approximate size shown on ring sizer, really not sure how to expertly measure the size. Nice oval Red Jasper Stone with Scroll and Bar designs on band. Marked SU inside along with .925. I believe this is from QVC as my mother had purchased most of her jewelry there but I do not now what SU means. Made in Italy?