Gemstones and Minerals design. This shows a blue ice agate pattern great for men and women interested in microcrystalline quartz or chalcedony. Cool for an agate lover. Searching for a cute agate design for a gemologist expert with gemstones and stone minerals? Are you a gemstone collector? If yes, then this is for you. Adhesive backing attaches the PopGrip to your case or device. Will not stick to silicone, leather, waterproof, or highly textured cases. Works best with smooth, hard, plastic cases. Not compatible with wireless charging Printed top is swappable with other compatible PopGrip models. Just press flat, turn 90 degrees until you hear a click and remove to swap.