Nowadays, the number of people wearing gold jewelry is increasing day by day. Therefore, how to identify the authenticity of gold jewelry is a problem that many people are concerned about at present. In addition to paying attention to modeling, workmanship and style, buying gold jewelry mainly depends on quality. The higher the gold content, the higher the value. At present, more than 99% of gold is generally called pure gold. Followed by 22K gold (content 9 1.6%), 18K gold (content 75%) and so on. If you identify the exact color of a piece of gold jewelry, you need certain tools and rich experience. But generally speaking, it is helpful to identify the truth and master the common sense introduced below. (1) Check the weight. The specific gravity of gold is 19.3, which is heavier than silver, copper, lead, zinc, aluminum and other metals. For example, the same volume of gold is 40% heavier than silver, 1.2 times heavier than copper and 6. 1 times heavier than aluminum. Try it in your hand and you will feel the gold fall heavily. If you feel light, you should pay attention to it and don't be cheated by speculators. (2) Visual color. Gold has a dazzling red and yellow luster. The higher the fineness, the more beautiful the color feeling. It is said that "seven greens, eight yellows, nine five reds" will be eclipsed by other general metals. (3) Poke the reference. In the past, all kinds of gold ornaments sold in the old gold shop were stamped with our store name. For example, there are words like "Tianbao in Beiping is always full of red" and "Sanyang in Beiping is always full of red". After liberation, state-owned manufacturers also had stamps. For example, the gold ornaments made by Beijing Jewelry Factory are stamped with the seal of "Jing E Pure Gold". The gold ornaments produced by Beijing Jinyinsi Mosaic Factory are marked with the words "Jing A", "Jing B" and "Jing C", and the gold content percentages are 99.99% and 99.9% respectively. Therefore, it is also of reference value to look at the stamps to distinguish between true and false after weighing and visually inspecting the colors. (4) Check the hardness. Gold itself is soft, gold ornaments are soft when the color is high, and hard when the color is low, such as silver and copper. So bending hardness is also a way to know the approximate color. (5) check the rhyme. When the gold jewelry falls about a foot away from the table, the gold with purity above 99% will only make a "beep" sound, without rhythm and elasticity. Sound and dust rhyme is long and elastic, that is, gold contains more metals such as copper, and its color is not good. (6) combustion method. Gold is resistant to high temperature, and its melting point is 1063.43℃, so as the saying goes, "real gold is not afraid of fire". If gold ornaments burn red on charcoal, after cooling, the surface of the ornaments is still yellow, which is real gold. If it turns black, it is fake gold. There are many kinds of gold ornaments, and the identification is quite complicated. Some of the methods provided above are just common sense to distinguish between true and false. If necessary, please ask a professional department for identification. At present, the gold ornaments produced and sold by state-owned manufacturers have been appraised by the state, and there is no doubt that they are genuine. But you must never buy gold from private people on the road. It is illegal to buy and sell gold privately in violation of the state regulations on gold and silver management, and you must not look for processed gold ornaments in the street to prevent being deceived.