This Mid Century ring is made from 10-karat yellow gold. The center is set with a unique gem, a step-cut piece of uranium glass. As you can see in the last photo, this glass glows under UV lighting. You can learn more about uranium glass and see a complimentary ladies ring in the blog "His and Hers - Volume 13" by Joden Girl. The shoulders of the ring have three deep ridges. Accenting the design is a subtle satin finish. Measuring a finger size 8, this ring can be sized if needed.