Unique heart-shaped infinite design, highly polished, rhodium plated, cubic zirconia, simple and elegant engagement ring Material: The ring is made of high-quality copper and multi-layer vacuum black gold electroplated polished stone, making it look gorgeous and shiny. It is nickel free, lead-free, cadmium free, allergic to the skin, non cracking, and non discoloring. Use method 1. Always wipe the surface with a soft cloth; Please avoid severe collision; Please avoid wearing it during sports, swimming, and bathing. Usage 1. Always wipe the surface with a soft cloth; Avoid serious collisions; Avoid wearing it during exercise, swimming, and bathing. Make the best jewelry