These rings are designed to be adjustable, so they will fit just about any finger size. These are made from brass and silver plated with either Blue Apatite, Amethyst on a gold Bezel, or Sunstone tear drop Gemstone. They are not made from steel due to the fact they would not be adjustable, but the metal quality is the best quality. They are still strong but wont snap with adjustment around the finger. They do have a breaking point like any other metal if its bent to much.