2 TONE CIRCLE AND HEART SET Nickel-free Sterling silver two tone double heart cz set with 18k gold 50mil plated heart details. Set includes pendant and earrings Also includes a rhodium late finish, which gives it its lustrous white gold appearance. All of our cubic zirconia items are also made with Grade A quality stones with a high-shine finish. All of our CZ pieces are always set and never glued on. Depending on the styles, JVL Jewelry uses both machine-cut and hand-cut CZ stones. JVL Jewelry guarantees that our Sterling silver merchandise is 925 Sterling or above.