Crystal, Swarovski crystal choker, chic, luxury jewelry, woman, rainbow, fashion, rainbow It can make think of a waterfall of diamond, dazzling! Clasp length: 33.5 cm + 5 cm chain You can tell me a custom length Material: crystal, stainless steel primers guaranteed without nickel We call crystal, the glass whose refractive index is equal or higher than 1.545. Unlike glass, crystal has more clarity, more brightness.