Gold can be made into thin nuggets and rolled up easily. An ounce of gold can be hammered to a thickness of 4 million feet, 100 square foot. The ancients hammered it into thin slices and spread it in temples and palaces for decoration. All these can show the flexibility and ductility of gold. The color of gold is golden yellow, which has metallic luster and is not easy to decompose. The density is 19.3g/cm3 and the melting point is1064.4℃; Good ductility, can be pressed into thin foil, and has high heat and thermal conductivity. Pure gold has a resistance of 2.4p and good chemical resistance, so it is the best electroplating material.

Domestic testing standards for gold products are very strict, and regular merchants generally regulate the whole process from raw material procurement to storage, processing and sales. Investment gold bars sold by major domestic brands and channels can generally be repurchased. When buying back, it must be damaged and sprayed with a gun. Gold bars become "golden bumps" and then are detected by gold detection equipment. If there is a problem, you will know it as soon as you test it. Moreover, the production process of gold bars is actually relatively simple, and there will be no technical problems, but the process of gold jewelry is relatively complicated. A few enterprises may dispute the quality of gold on extremely delicate issues such as solder joints, but this is not a problem of adulteration, and consumers need not worry.

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The hedging rate of gold varies by type:

1. 18K gold is only suitable for wearing. It is impossible to collect and preserve value. Because the metal material of 18K gold contains 75% gold, while the price of beautiful and fashionable 18K gold jewelry is much higher. Just buy it and wear it. If we want to say the hedging rate, it is the worst.

2. There are other gold jewelry materials, not to mention 14K. It's not as good as 18K, and 22K gold is not preserved by pure gold.

3. It goes without saying that pure gold jewelry is ordinary pure gold jewelry, which is directly based on the sales price of the day plus some process fees. The price of 3D hard gold is higher than that of base gold, and the process cost is also more expensive. After all, the style of the work is exquisite and beautiful, beautiful and fashionable. Of course, the price is also higher than ordinary gold jewelry.

4. There are no complicated procedures for gold bars, and there are not too many processing fees. A very ordinary gold bar is a transaction based on the gold price of the day, plus a little handling fee. In particular, the price of gold bars in banks is lower than that in jewelry stores. There is no exorbitant handling fee. According to the trend of gold price that day, adding a little handling fee has an advantage over ordinary jewelry prices.