Identification methods include observation, hand weighing, listening, chemical reagent detection and instrument detection.

1. Observation: This is the most basic step, and whether there are defects can be judged by naked eye observation.

2. Hand grip: Perceive the density of jewelry by hand grip.

3. Listen to the sound: judge the authenticity by listening to the sound of jewelry collision.

4. Chemical reagent inspection: If necessary, chemical reagents can be used for inspection.

Instrument detection: When more accurate detection results are needed, instruments can be used for detection, such as X-ray fluorescence analysis and infrared spectrum analysis.