Every piece of jewelry we send to our subscribers is crafted to last a lifetime. The gold and black plated jewelry is made using PVD vacuum coating, creating extremely durable and high-quality finishes on each piece of jewelry. The solid stainless steel jewelry is crafted to ensure it resists corrosion and oxidation. The premium crafting techniques used ensure that your jewelry will never tarnish or turn green even when worn in the water or when sweating.