One of the tricks: making gold on the scale.
At present, most of the gold weighing tools in jewelry processing shops are pallet scales. Some illegal gold and jewelry processors tampered with the trays of this pallet scale. They deliberately made the tray lighter and heavier. Some people use gold to process jewelry and put it on a CD. After processing, they put the jewels in heavy trays so that even if they deduct some gold from their customers, they will not be found.
Deception 2: "Wang Shui" stripped gold
"Aqua regia" is a chemical liquid made of concentrated nitric acid and concentrated hydrochloric acid with the molar ratio of 1:3. Although gold is a very stable substance, it is difficult to react with other substances, and "aqua regia" can easily melt gold, so some unscrupulous jewelry processors use this simple chemical reaction to clean gold jewelry for customers, so that customers can peel off gold without naked eyes. Those processing shops that claim to be able to clean gold ornaments for customers for free often hide this "catty".
The third measure: stealing gold for silver
Some illegal jewelry processors cheat when smelting gold and processing jewelry for customers. In the process of smelting gold for customers, they will mix some impurities, such as silver powder and copper powder, and smelt with gold. What customers see on the surface is that the processor removes impurities from gold for them. In essence, they are adulterating melted gold in the name of removing impurities, mainly to make it difficult for customers to find out the weight loss after deducting customers' gold.
Deception 4: touch gold in troubled waters
Some people deliberately leave a small amount of gold in the plaster mold when processing jewelry, and throw away the waste plaster mold in front of customers, creating the illusion that there is no gold in the plaster mold. After the customers left, they took back the discarded waste molds and took out the gold. There are also a small number of illegal jewelry processors who cut off some "scraps" from customers' jewelry and secretly take them for themselves when customers are not looking. In order to make up for the original weight of customers' gold, fake "goods" were mixed in the smelting process.
Deception 5: "second" gold is good
General jewelry processing shops will sell finished gold jewelry, most of which are processed by themselves. When they are processing, they deliberately mix fake "goods" into gold, but when they are selling, they are sold as high-quality gold jewelry. Most of their jewelry is boiled with sulfuric acid, which generally looks bright. People who don't understand "goods" are easily confused by the appearance of these jewelry.
As long as consumers take more precautions when buying and processing jewelry, it is easy to see through these tricks by polishing their eyes. However, the author still reminds consumers that when buying and processing gold jewelry, they should not covet "small profits", and it is best to go to a larger jewelry processing shop approved by the People's Bank of China.