Uncover the Cold Knowledge of Jewelry

I believe many people will hear when they buy it. This is Vietnamese gold, very cheap, and also gold. Or how good it is to fool you about Vietnamese gold, and what is Vietnamese gold? In fact, the source of sand gold and sediment is almost the same. They both come from the low-lying areas at the bottom of the river and become sand gold after natural formation.

The gold content of alluvial gold is about 5% - 15%, and the rest is mostly impurities, which does not reach the gold content required by real gold jewelry on the market. Therefore, Vietnamese alluvial gold is not gold in fact, which should be noted. Don't be fooled. Not only that, Vietnamese alluvial gold is not only produced in Vietnam.

Therefore, do not use water to protect pearls. In addition, the main ingredient of pearls is calcium carbonate, while vinegar contains a lot of acetic acid, which will dissolve calcium carbonate and cause the pearls to dissolve. Therefore, we should try to keep away from vinegar when wearing them.

Note that Afghan jade is not jade in fact, and the most imitations of Hotan jade on the market are made of Afghan jade. Afghan jade is actually a kind of stone. Officially, we call it marble. Because its shape is similar to Hotan jade, it is called Afuhan jade. But the prices of the two are far from each other, so don't be fooled when you buy it. The price of stone is not that expensive.

Fourth: Why does the jadeite counter drain water

The reason is that the crystal water inside the jadeite is not stable, which may decompose and evaporate the internal water under the condition of heat or excessive light, leading to the dull color of the jadeite and reducing the aesthetic degree. Our circle calls it "running water", so in order to properly replenish water, the jadeite counter will put a glass of water, do you understand?

Among the white pearls, Akoya seawater pearls in Japan have the highest value. It should be noted that there are many colored pearls on the market. If you encounter colored pearls with unusual bright colors and obvious plastic feeling when buying, they must be fake.

Generally speaking, the higher the purity of a gem, the less impurities, and the higher its value. Therefore, many friends blindly pursue flawless gemstones. But this kind of psychology is easy to be used by unscrupulous merchants to sell some counterfeit flawless gemstones to consumers. You should know that there are few natural flawless gems, especially large carat precious gems. Even if there are, it is hard to see them in the market. I'm afraid that high-end flawless natural gems will have to go to the international auction house to have a look.

From www.showfay.com