This kind of goods of big brands are generally equipped with nationally recognized certificates, which can be judged by reference. If it is gold inlaid with jade, then give up decisively. If it is 3D hard gold, it will be purchased carefully. If it is 24K gold or 18K gold, it can be determined by comparing the specific grams with the price of jewelry in Liu Fu today and the moisturizing chromaticity of Hetian jade.