1、 View imprints

According to national standards, precious metal jewelry should be marked with marks of origin, manufacturer, material, and content. Products without marks are considered unqualified. If there are quality issues, the quality inspection agency can provide testing and judgment based on the imprint. Consumers need to purchase their desired brand and gold jewelry with different gold contents based on the imprint.

2、 Sensory testing method

1. Color: Full gold is dark yellow, while K gold has multiple colors such as yellow, red, and white, while imitation gold products are mostly made of copper alloy with lighter colors.

2. Weighing weight: The specific gravity of gold is 19.3g/cubic centimeter, which is much higher than that of imitation gold products. For example, a full gold ring weighs about 5 grams, while imitation gold products of the same size generally weigh less than 3 grams.

3. Hardness test: Pure gold is relatively soft, can be scratched with a pin, and has tooth marks when bitten with teeth.

If you need to accurately know the content of precious metal jewelry or if there is a quality dispute, you should go to the jewelry quality inspection agency and use physical or chemical analysis methods for identification. When purchasing jewelry, it is also necessary to carefully check whether the stone inlay and welding are firm and free from fractures, burrs, sand holes, etc.