The easiest ways to identify gold are scraping porcelain, comparing density, adding water, using magnets, using vinegar, listening to sounds and so on.

1, scraping porcelain

Prepare an unglazed ceramic plate, then put metal on it and apply a little pressure to see if gold will appear on the ceramic. Some things are true, but if there is black, it is false.

2. Density comparison

The density of gold is 19.3g/ml, which can be calculated and compared. If the data is too different, it is false, and if it is close, it is real gold.

Step 3 put it in the water

Prepare a glass of water and throw it in. If it is pure gold jewelry, it will sink quickly.

Step 4 use magnets

Real gold magnets can't attract, imitation gold or other synthetic gold may be attracted.

Step 5 use vinegar

Try dropping vinegar on gold. If it changes color, it is not real gold.

6. Listen to the sound

Real gold with a purity of more than 99% will generally click when thrown on the hard ground, while fake or inferior gold will make a crisp but not dull sound when thrown on the ground, and will generally make a "clang".

Above content reference: Baidu Encyclopedia-Gold