The gold purity and fineness of Yuanyang Golden House are good, and there is a lot of room for appreciation. But when buying, we should pay attention to prevent fake and shoddy products from entering our pockets, so as to distinguish between true and false before buying.

Moreover, gold has a currency price, which is the trading price of gold on the Shanghai Stock Exchange. This is a hard cost and will not be lower than this cost. Any manufacturer's gold, higher than this price, is his profit+publishing fee+service fee, 300 gold in Shanghai Stock Exchange and 338 gold in Yuanyang Gold Building, which means a premium of 38.

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The method of distinguishing true and false gold is as follows:

1, look at the color:

According to the different luster and color of gold, pure gold, k gold, real gold and fake gold can be roughly distinguished. In other words, red and yellow (yellow-red) is the best gold with a fineness of over 95%; The fineness of positive yellow is about 80%; Cyan accounts for about 70%; Yellow is light gray, and the fineness is about 50%.

Therefore, there is a formula of "seven green, eight yellow, nine five red, yellow and white with gray and half gold". For a long time, there has been a saying that "copper turns green, silver turns black, and gold never changes color".

2. Weighing:

With the same volume of silver, lead and tin, the weight of gold is about twice. Real gold feels like falling in your hand, while copper or others only feel heavy and don't fall.