This Christophe Black Agate Stone Ring is a total showstopper. The dramatic 1.2 x 1 inch black agate stone creates a bold vintage vibe, set in 18K gold-plated brass that makes the deep black pop. Available in size 7 (0.682" diameter/2.14" circumference), it's substantial without being bulky. Completely lead and nickel-free, so it's gentle on your skin while making a serious style statement.