Don't care too much. Now all gold and silver jewelry will contain alloy components. It is recommended not to call directly. You'd better find a gold shop, such as Chow Tai Fook. They will add some processing fees, but the quality can be guaranteed, but try not to play directly, the quality will be problematic.

Four tricks:

1, the trick of weighing and deducting gold is the most commonly used trick of a few unscrupulous enterprises. At present, the gold weighing tools in gold jewelry processing shops are mostly pallet scales. Those unscrupulous merchants use this pallet scale to make the weights of the two pallets different. Some people take gold jewelry into the store for processing, put it in a light tray, and put it in a heavy tray after processing, so that even if you deduct a small amount of gold from customers, you won't know. Therefore, it is necessary to re-weigh the jewelry before and after processing to avoid being cheated.

2. To remove the dirt on the surface of gold ornaments, it is necessary to soak the gold ornaments in low concentration hydrochloric acid solution. However, some illegal traders added nitric acid to the hydrochloric acid solution used in cleaning gold jewelry. This mixture of hydrochloric acid and nitric acid is the so-called "aqua regia", which is very corrosive to gold and can dissolve gold. Gold baked at high temperature can be dissolved and released as long as it is soaked in aqua regia for 20 minutes. Adding active metals to the "aqua regia" containing gold can reduce the gold content, and consumers' gold is "stolen" by unscrupulous merchants unconsciously.

3. Some gold jewelry processing shops sell finished gold jewelry. Most of these gold jewelry are processed by businessmen themselves. In the process of processing, they deliberately mixed other impurities into gold to reduce the purity of gold. Then they cook it with sulfuric acid to make the gold jewelry look bright, and then sell it at the price of high-quality gold jewelry. Some consumers who don't know the truth will be deceived by the appearance of these gold ornaments.

This scam is the process that some unscrupulous traders use customers to smelt gold, mixing some impurities of silver powder and copper powder, and smelting with gold. On the surface, what we see is to help customers remove impurities from gold. In fact, it is an opportunity to steal some customers' gold. Adding silver powder or copper powder to keep the weight of jewelry, but in fact, the processed gold jewelry has lost its original purity.