If the gold turns black after burning it with a lighter, is it real gold? What should I do if it turns black and cannot be wiped clean?

Under normal circumstances, gold will not turn black when burned, otherwise there will be no recycling phenomenon in specialty stores. After recycling gold, it needs to be burned and then remade. Therefore, gold turned black after burning it with a lighter. If it is clean it is real, if it is not clean it is fake.

1. The gold turned black after being burned with a lighter. Is it real gold?

Can the black be wiped off? If it can be wiped off, it is left by the lighter. If it cannot be wiped off, it is obviously fake. Burning gold with a lighter may leave carbon black on the surface, first wipe it to see if it can be wiped clean, on the one hand, it is recommended to burn with a smokeless fuel so that the gold can be burned very brightly, however, it is generally not recommended to burn , because it will be annealed after firing it red, and different gold processes have different cooling methods.

Second, what should I do if the gold is burnt with a lighter and it turns black and cannot be wiped clean?

1. Soak it in rice water. This method not only increases the lustre of the gold, but also absorbs the dirt that is adsorbed on the jewelry surface. 2. Use metal cleaning fluid. You can buy it at specialty stores or use salt, baking soda, bleach, and water. Soak the jewelry for one to two hours, then wash it off to restore its original color. 3. Rinse with toilet water and wipe the black area of ​​the jewelry with a cotton swab dipped in toilet water.

Third, will burning gold reduce weight?

No. Gold is golden in color, has a metallic luster, and is difficult to break down. Hardness 2-3, pure gold 19.3, melting point 1064.4°C; It has good ductility, can be pressed into thin foil, has extremely high heat transfer and conductivity, and the resistance of pure gold is 2.4p. Pure gold has good chemical resistance and is the best material for electroplating. As a precious metal, gold has good physical properties. "Real gold is not afraid of fire" means that gold has high chemical stability and is not easy to chemically react with other substances, so there is no need to worry about oxidation and discoloration. Even in the molten state, it will not oxidize and discolor, and it will still shine when cooled.

(Responsible editor：Wall decoration)