This ring tests as sterling even though it is not marked. The Turquoise is very nice and has been stabilized, the turquoise set is 1/2 inch round. The whole flower effect is one inch. So the top of the ring is one inch round. The outside edging of the flower looks like petals. It has a very nice effect. The ring is older and not marked. The size is 6 1/2 It will come in a velvet bag and gift box ready to give as a gift. For you from Kansas!