Something different, something intriguing, something just for him. Glowing with a deep luster, the 10. 0mm square onyx gemstone gallantly takes over the center of this ring. Two embedded rows filled in with black diamond accents sparkle along the shank. Warm and polished, this 10k gold open back ring is a style he is sure to enjoy. Open back rings expose the design's intricate details along the underside of the shank.