... , FIR., ions etc.Surface settingCZ stones, carbon fiber, gold foil, cable, silicone etc.Finishing craftshinning, matte, sandblasting etcIP ... colorgold, rose gold ,black,coffee,silver,Bronze, blue...keep 3-5years no ... is our best honor.Reference StylesStainless Steel Gold Necklace TT80 HOT Stainless Steel Gold Necklace with Crystals