Gold ornaments are divided into 24K (gold content above 99%), 22K (gold content 9 1.7%), 18K (gold content 75%), 14K (gold content 58.33%), 12K (gold content 50%) and so on. When buying gold jewelry, you can identify it from the following aspects.
Color discrimination: As the saying goes, gold is "seven green, eight yellow, nine purple and ten red". Experts believe that 70% of jewelry with gold is yellow with blue, 80% is yellow with gold, 90% is yellow with purple, and 100% is red with gold. Pure gold is soft and generally not used to make inlaid jewelry. Therefore, any so-called 24K inlaid gold jewelry must be fake.
Weight: The specific gravity of gold is 19.3 g/cm3, and the fineness is closely related to the specific gravity. When the specific gravity is close to 19.3, the content of pure gold is higher. Gold content is 95% when the specific gravity is 18.5, and 90% when the specific gravity is 17.8, and so on. As long as the specific gravity is measured, the fineness of gold jewelry can be known. But most people can feel a sense of precipitation.
See rhyme: Gold jewelry with high fineness will have a dull snapping sound when thrown on the concrete floor, which is commonly known as "dead sound". On the contrary, low-quality gold ornaments thrown on the concrete floor will have rhyme, long shrill sound and slight rebound.
Soft and hard: The higher the fineness of gold jewelry, the softer it is and the less elastic it is. Real gold will have faint traces when bitten by teeth or scratched by needles, and will not be broken by hand, nor will it change color when burned (not at extremely high temperature). The low-quality fake is the opposite.