... Specification MaterialA). Alloy ( nickel-free and lead-free )B). Copper / brass (nickel-free and lead-freeStoneRhinestone or crystal ( different colors are available )SettingInlay ... . D). Eight colors, white,black, red, yellow, pink, green, purple and mix-color.E). Product range from necklaces bracelets, earrings brooches ... , we hope business is not only mutual benefit, but permanent. crystal necklace