Red Spinel Ring 14kt Yellow Gold. ┬á This is a pretty solitaire style ring hallmarked S (Stuller)14kt yellow gold. ┬áThe stone is an oval┬ácut ┬áred spinel weighing 0.73cts, it is dark, very slightly brownish, Red in┬ácolor. The ring was cast, assembled and handset with a bright polished finish, it is a size 6 1/4 . It is very good condition and includes an insurance appraisal of $494.00.