Pure gold, K-gold, gold-plated jewelry are not all gold, the

Now there are many kinds of gold jewelry in the market, not only 24K gold, but also many kinds of alloy of technology. These are all gold characters, but not all gold. The difference is still very big. At present, there are many kinds of jewelry in the market: pure gold, K-gold, Bao gold, plating gold, etc. the gold content of different materials is also different. Only the gold content of pure gold is more than 99%. The rest are alloy jewelry with poor purity. These gold will confuse the public, so it needs to be carefully identified.

Today we are going to understand the distinction between pure gold, K-gold, gold-plated jewelry and the simple and easy to learn identification method.

1、 Full gold is pure gold jewelry

The appearance shows a golden yellow texture, bright luster, but the texture of gold is very soft, gold is very soft, and has a strong ductility. The mark of gold is G990, au990, f999 or f999. However, the mark can not be used as a standard to identify gold, but it is only a reference.

Identification method of gold:

If there are certain gold jewelry can be compared together, the color of gold is still obvious. The purity of gold also depends on the color. If you are not sensitive to color, you can also weigh it. The density of gold is relatively high, so it's heavier. It feels like falling when you weigh it by hand. The hardness of gold jewelry is about 2.5, which is similar to the hardness of nails on our hands. It's just more malleable. You can make fine marks with your nails. You can try it when identifying.

2、 K-gold jewelry (yellow K-gold)

The color of K-gold is also very rich. The color of K-gold is different from that of pure gold. K-gold jewelry not only contains gold, but also alloys of silver and copper, so it looks a little lighter, but it needs to be compared with gold to know. According to the proportion of gold content, it can also produce 22K, 18K, 14K and other K gold, especially the European jewelry is mainly 14K and 10K.

K gold identification method:

Look at the mark of K-gold jewelry, the mark of K-gold jewelry will be au750, au585, au375, etc., and some marks are 22K, 18K, 14K, etc., plus the mark of the manufacturer. The hardness of K-gold jewelry is far greater than that of gold jewelry. The hardness is above 3.5, and the nail can not be scratched at all. K-gold jewelry without mark should be purchased carefully.

K-gold also has rose gold, white gold, black and other colors, of which k-platinum is easy to be confused with platinum. After careful identification, it can be seen that the color of k-platinum is slightly cyan white, and the luster is not as bright as platinum, and some hair is black. The rest of rose gold and black gold are easily confused with non gold metals. Therefore, it is only a reference factor to identify the marks of K-gold jewelry. The most important thing is to send it to the third party identification agency to see the machine to verify the gold content in K-gold jewelry. Only about 75% of K-gold jewelry can be identified as K-gold jewelry. The appearance of K-gold jewelry is easy to be confused with gold-plated and gilded jewelry, so the machine identification is more effective.

3、 Gilded jewelry

Many gold-plated jewelry are made of the main components of copper. A layer of gold is plated on the surface of copper by electroplating, but the plating layer of gold is very thin, so there is a difference when looking at such gold-plated jewelry carefully. Although the luster is bright and soft, it is not durable. If you wear the gold-plated jewelry for a period of time, it will be worn off, and then the blank of brass will be exposed But appears the dim different red yellow, moreover the gilding place which is worn will also blacken.

Gold plating identification method:

Because it's gold plating, there will be traces of whether it's completely plated. Usually, you can look for such traces at the junction of jewelry or the corner depression, and there will be places where it's plated. Because the gold-plated jewelry is a billet of copper or other metals, it is very light to weigh. There is no gold pendant feel. If it lands on the ground, there is a crisp "dangdu" sound. Generally, there is no mark. If there is a mark, it is 18KGP.

4、 Gold jewelry

In fact, it's easy to understand that gold jewelry is wrapped with pure gold foil on copper products or silver jewelry, and then processed into a variety of jewelry. Don't think that gold foil with gold is very valuable, in fact, gold foil is very cheap, because a gram of pure gold can be hammered into 9.6 square meters of gold foil, and the gold jewelry is generally well pressed, and the gold foil won't be opened easily.

Identification method of gold jewelry:

The thickness of gold foil of gold-plated jewelry is thicker than that of gold-plated jewelry, which is similar to gold jewelry in appearance, and usually marks 18kf on the inside of jewelry. The feel of gold jewelry is not as heavy as gold, there is no feeling of falling hands. There are still some traces in the production of gold jewelry. If you feel that the corner of gold jewelry is not right, you still need to pay attention. The appearance of gold foil is more compact than gold jewelry because it is hammered. The real gold foil is green to light note.