These are Jet Swarovski Crystal Buttons Article #3015. These crystal buttons are nicely faceted and gently pointed on the top. The backside of these buttons has a single channel through which you can sew the button on to your design, or string it for a beading project. Add a little, or a lot of bling to your clothing or jewelry, either way I know you will find the added sparkle amazing. We are selling these Swarovski crystal buttons in packages of 12 crystals each.