"1, look at the color to identify Jin Dafu gold, the higher the purity of gold jewelry, the darker the color. 2. Weigh and identify Jin Dafu's gold. Gold ornaments feel deep in your hand, while fake gold ornaments feel light and floating. This method is not suitable for gold ornaments with precious stones. 3. Judging from the hardness, the gold is rich in gold. Pure gold is soft and has a low hardness. With nails, shallow marks can be drawn, and teeth can be left with teeth. Gold jewelry with high color is softer than gold jewelry with low color. The more copper it contains, the harder it is. Pure gold is soft and easy to bend. The lower the purity, the more difficult it is to bend. "