health silicone necklace chain is silicone,pendant is ... Jewelry, Eyewear>>Jewelry>>Costume & Fashion Jewelry>>NecklacesName;Healthy necklace,therapeutic necklace,magnetic necklace.1. Material:titanium, pure titanium material, Non- ... rust, non-allergic, radiation-proof, acid and alkali resistant, anti-corrosion.The necklace ...