A design based on the Hamsa Hand found in Eastern and African history. The image is a universal sign of protection. I also have a pair of earrings with this same design that can be found here: http://www.shapeways.com/model/479724/hamsa_hand_earrings.html?key=7a92ea1c37e8ed1fdc39b6445ebe2758
This ring has an inside diameter of 18mm, approximate US size 8. If you'd like me to upload another size by all means get in touch.