JSEA Stainless Steel Yin Yang Puzzle Piece Pendant Necklace for Women Men Pendant:26mmX28mm;Matching with 2 stainless steel cable chain The yin-yang is a symbol of harmony Stainless steel jewelry is Green Jewelry. It does not contain lead and nickel,Resistance to acid,alkali resistant,anti-fading,hard and bright. Anti-allergy,it won't produce side effect and harm to human body. Vacuum plating:To increase the product's ability to engage in oxidation. More shiny metallic appearance, resisted to rust, corrosion and tarnishing Clean with soft cloth.Avoid chemicals;Avoid friction.Take off when sleeping