The gold identification method is as follows: 1. Bite method Bites can be used to identify gold. Gold is a very soft metal. Gold with high purity has low hardness, and tooth marks will appear after being bitten. If the color of gold is low and the content of other metals is high, the hardness will be higher, and there will be no trace if you bite it with your teeth. 2. Combustion method. In addition, gold can also be identified by combustion method. After firing, the gold with higher fineness will not change color, and the color will get better and better. However, gold with chromatic aberration, due to the high content of other metals, will turn black and discolor after burning, and its gloss will become worse. 3. Manual weighing method. Gold can also be identified by manual weighing. Gold accounts for the largest proportion of metals, accounting for 19:37. So the same volume of gold will be much heavier than silver, copper, iron and other metals. When you weigh gold with your hands, you will have a strong feeling of falling.