Show stopper Snap charms are covered in rhinestones & will fit Ginger Snaps jewelry, Magnolia & Vine plus other 18-20 MM snap jewelry. Gorgeous multi faceted rhinestone snaps measure between 21 mm -22.9 mm and are absolute statement pieces! They are made from zinc and do not contain cadmium, lead or nickel. Snap Charm jewelry is a unique style of interchangeable personalized jewelry. Snaps are button-like charms that snap into a base piece of jewelry such as bracelets, pendants, earrings and key chains. You can customize your piece by snapping in a new snap charm to change the look of your jewelry. Great for travel, one piece of jewelry with different colored snaps is uniquely yours!