Fabulously bold and stylish oxidized silver geometric rings. They were clearly made by the same hand but only one has an (illegible) maker's mark. The other two are marked only 925 for sterling silver. They appear to be in unworn condition. The circle measures 1 1/4" in diameter; the square is 1 1/16". Well made with substantial weight. Ring on left is size 6; middle and right are 6 1/2.