The Swarovski round crystal button 3015 is one of the more popular crystal button styles. This round crystal button has a horizontal hole that runs side to side in the center of the button for the thread. This way, you will never actually see the thread. The button is in the shape of a rivoli, with symmetrical facets that come to a point in the center of the front and the back of the button (it does not lie flat).
For more information on how to sew Swarovski 3015 crystal buttons, please review the