old wedding ring

by rbeurn
(virginia beach)

I was wondering if an old wedding ring in my grandfather's stuff is gold or not. it has a mark of J & S. It obviously was my great grandmother's ring, as it is inscribed as well, from her to her first husband. my guess late 1800s or very early 1900s when they were married, as granpa was born in 1922. plain wide band. no other inscriptions or karat markings on it.