Vintage Jade ring, part of estate, know nothing about it. Do not know size

Part of my mother's estate. The metal is unknown to me! Looks like whatever stamp is inside band, too rubbed off to reed. All I can tell you is look at the pictures I did the best I could with close-ups the metal around the top and bottom of the Jade looks yellow gold tone and the inside silvertone don't know what it is again Definitely no returns or refunds your guess is as good as mine until it's in your hands what kind of metal the Jade is around could be gold could be silver I don't know I hope it's a treasure for someone impeccable for everyday use. excellent materials and excellent craftsmanship ensure long-lasting durability.