Very pretty ring. The shank is hallmarked L.A.F. 14K. Very fine filigree work around the stone, and partially down the shoulders. The Amethyst is a medium purple color. The Amethyst stone is an oval cut. The Amethyst measures 8mm X 10mm. The ring is size 6. Weight is 2.3grms. Condition is very good for age. I would date this great ring at c1920's.