Why PVD from Memory Created? ♡ PVD (physical vapor deposition) coating, also known as thin-film coating, is a process in which a solid material is vaporized in a vacuum and deposited onto the surface of a part. These coatings are not simply metal layers though. Instead, compound materials are deposited atom by atom, forming a thin, bonded, metal or metal-ceramic surface layer that greatly improves the appearance, durability, and/or function of a part or product. We're using this PVD coating technology on our jewelry. And this coating will make jewelry last way longer than normal gold plating jewelry. It won't tarnish in water or sweat, also won't turn green.