Black rhinestone 1 inch square clip earrings vintage jewelry

This pair of clip earrings are approximately 1 inch square. There are black rhinestones all along the perimeter on a black metal backing. The chip portion has a 4 rhinestone front. All rhinestones are original and securely in place and the set is in very good condition. These are unmarked. They can be converted to earrings for pierced ears if you just want to use the square dangle portion. The photo shows the front of one and the back of the other.