There is a single rectangular shape that is longer then it is wider, and with slightly rounded edges. In the middle of this shape there is a circle, and in the middle of the circle there is a line going through it vertically. Behind the circle there is a darker circle emulating a shadow.
Related to Diners Club Icon
Related icons are the icons with matching tags, as well as all finance icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors