Vintage Russian Soviet Sterling Silver 875 Ring Alexandrite USSR.PLEASE PAY ATTENTION TO THE PHOTO. IF YOU'VE PAID? DOES THAT MEAN YOU ARE SATISFIED? AND YOU HAVE READ THE DESCRIPTION AND AGREE WITH THE PURCHASE. Vintage silver ring. Vintage silver ring 875 assay value, Corundum stone, there are traces of time. If you have any questions? Please ask. Corundum is a type of mineral that is a crystalline aluminium oxide. Corundum includes rubies and sapphires, which, although different in appearance, have identical crystal structure and properties. Vintage Russian Soviet