Lovely oval cut olive green stone with natural inclusions. whatever the stone it is, the ring sure is pretty! the stone is oval shaped and is a milky olive green with white and rust colored flecks through it. the setting is silver tone, but it looks like the metal used maybe brass because the patina of the silver has worn in some areas revealing a more brass tone. fits my middle finger which is a size 7 or my ring finger which is 5.75-6 looks vintage