1, production process: cyanide-free gold is hardened by electroforming, with a gold content of not less than 99%, higher hardness than ordinary gold, less deformation and good three-dimensional effect. Hydrogen will be added in the production process of ordinary gold, while some cyanide-free gold will not be added in the production process.
2. Purity: The extraction process of cyanide-free gold is purer than ordinary gold, which makes cyanide-free gold more valuable and attractive when making jewelry and investment products.
3. Gold is a precious metal, and the symbol of chemical element is Au. It is a stable metal with good electrical and thermal conductivity. The gold content in the earth's crust is very low and it is difficult to mine, so it is very precious.