There may never have been a more versatile earring! 5mm light amethyst, prong set studs are highlighted by a moss textured, fine silver circle. The circle can be worn in the front of your ear or the back. Plus, you can wear the amethyst studs by themselves in addition to using your own studs in the circle jackets. Circle measures a little over an 1 1/4 from outer edge to outer edge.