The first thing to pay attention to is the material of the gold you bought. For example, we generally don't recommend you to buy hard gold, mainly because it looks good but the processing fee is too expensive. If you choose to buy other kinds of gold at the same price, you can get more grams. Therefore, it is very unwise to choose to buy hard gold, especially for girls who have the intention of "trade-in" in the future.
Secondly, we should pay attention to the problem of welding points when buying gold. Many people ignore the problem of welding points when buying jewelry. If the gold jewelry you buy can see the welding points, it is not a good thing, because if it is pure gold jewelry, it is theoretically impossible to see the welding points. Once you can see it, it means that the pure gold you bought is insufficient.
In addition, because its purity is not enough, it will inevitably be damaged when remelting. For example, your necklace used to be 15g, but after it is lost, it may only be 12g. Apart from the problem of whether the solder joints can be seen, although some of them are pure gold, their welded joints are not welded well, which leads to their joints being not strong enough. This kind of jewelry is easy to be damaged or lost when bought, so it is also important to check whether it is processed firmly when buying gold jewelry.
The quality of "new" jewelry after redemption is also very important. When you trade a piece of gold jewelry, you can only see it when you deliver the old jewelry and receive the new jewelry, but you can't see it at all during its remelting, processing and molding. Many unscrupulous merchants choose to do some "small moves" at this time. The most common thing is to steal a small amount of gold from your jewelry and add impurities to cope with the original weight. Finally,
Many of them changed pure gold into 18k gold. For us non-professionals, it is difficult to tell whether it is pure gold at a glance. It is very important to take some special measures at this time. Here is a practical method to identify pure gold. Generally, pure gold will not change color after burning, but it will turn black if burned with a lighter, which is likely to be doped with impurities.