How to identify gold

The identification method of gold is as follows: 1. The bite method can be used to identify gold. Gold is a very soft metal. Gold with high purity has low hardness, and teeth marks will appear after being bitten. If the fineness of gold is low and the content of other metals is high, the hardness will be higher, and there will be no traces when you bite it with your teeth. 2. Combustion method. In addition, gold can also be identified by combustion method. Gold with higher fineness will not change color after firing, and the color will get better and better. However, the gold with chromatic aberration will turn black and discolor after firing due to the high content of other metals, and the gloss will also become worse. 3. Manual weighing method. Gold can also be identified by manual weighing. Gold has the largest proportion among metals, with the proportion of 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.