Identification of true and false gold

(1) Try the severity. The proportion of gold is 19.3, which is heavier than metals such as silver, copper, lead, zinc, and aluminum. For example, compared with silver, copper, and aluminum in the same volume of gold, gold is 40% heavier than silver, 1.2 times heavier than copper, and 6.1 times heavier than aluminum. Try it in the palm of your hand, and you will feel the gold falling heavily into your hand. (1) Try the severity. The proportion of gold is 19.3, which is heavier than metals such as silver, copper, lead, zinc, and aluminum. For example, compared with silver, copper, and aluminum in the same volume of gold, gold is 40% heavier than silver, 1.2 times heavier than copper, and 6.1 times heavier than aluminum. Try it in the palm of your hand, and you will feel the gold falling heavily into your hand. If you feel flirty, you should draw attention and don't be fooled by speculators. (2) Visually inspect the color. Gold has a dazzling red-yellow luster, and the higher the color, the more beautiful the color. The common saying is'seven green, eight yellow, nine five red', compared with other general metals, it will be eclipsed. (3) Stamp reference. In the past, all kinds of gold jewelry sold in old gold shops were stamped with the shop's name. For example, there are words such as'Beijing Tianbao Changji Zuchi','Beiping Sanyang Keeps Zuchi' and so on. After the liberation, state-owned manufacturers also had stamps. For example, the gold jewelry made by the Beijing Jewelry Factory was stamped with 'Beijing e Pure Gold'. The gold ornaments made by the Beijing Filigree Inlay Factory are marked with the words'京a, 京b, 京c' and the percentage of gold content '99.99' and 99.9'. Therefore, after weighing the weight and visually inspecting the color, looking at the stamp will also have a reference value for distinguishing the true from the false. (4) Check the hardness. Gold itself has a soft texture. Gold jewelry is soft with high fineness, and harder when fineness is lower than silver and copper. Therefore, the bending hardness is also a way to understand the approximate fineness. (5) Check the phonology. Drop the gold jewelry about one foot away from the tabletop naturally. The gold with a fineness of more than 99% will only make the sound of'beating', with no sound, no rhyme and no elasticity. The sound and the rhyme are long and elastic, that is, gold contains more metals such as copper, and the fineness is not good. Previous: Analysis of the price of gold Next: How to distinguish true and false gold?