Pretty, pink, white and purple cz studs in hypoallergenic surgical steel, IP plated with 14k gold, with push on backs. This gift pack would be suitable for children of all ages. Each cz is 4mm. What is IP Gold Plated? Ion Plating is a process where the surface required to be plated is bombarded by atomic sized energetic particles. It is said to be so durable, unlike regular gold plating, that it is considered permanent.Want two sets? Purchase 2 sets of these surgical steel cz studs and enjoy our Sister Special and get 10% off both sets.