1, fake jade contains strong carcinogens, which is not good for the wearer.

2. Fake jade troubles the jade market.

Second, fake jade:

1, ordinary glass material, jade powder pressing, resin material.

2. Real jade is dyed by injecting glue after being corroded by strong acid.

Extended data:

Methods of distinguishing jade from other jade;

Look, mainly depends on the crystal transparency, real jade has strong transparency and oily luster; Listen, Zhen Yu's voice is crisp, but her voice is dull; In the test, the real jade scratched the glass, but the jade itself was intact.

Common fake jade includes plastic, stained glass, marble, electro-colored fake jade, synthetic jade made of jade powder and crystal with salt water, and jade imitated with nitrate, etc. Their identification methods are also different.

Plastic is lighter than jade, and its hardness is poor, so it is generally easy to identify. It's easy to distinguish between painting and getting off work. As long as you take it under the light or check it in the sun, you will see many bubbles in the glass.

It is difficult to distinguish fake jade by electric color. Its purpose is to electroplate inferior jade and then coat it with a beautiful emerald appearance, so it is easy to mistake it for real jade. At this time, you need to observe carefully. If there are some small cracks with blue in the green, it is fake jade.

Because electroplating will leave cracks, experts call it "spider claws". It is also said that if the electro-colored fake jade is put in hot oil, the electroplating color will fade and return to its original color.

Synthetic jade made of jade powder, crystal and salt water is an imitation dark old pit jade. The identification method is simple, that is, their specific gravity is different. The specific gravity of natural jade is 3.3-3.4, while that of synthetic jade is only 2.8. Weigh by hand, or use a balance to distinguish between true and false.

Jade imitated with nitrate looks whiter and smoother than jade. The ancients said, "Jade is better than salt, so it must be high." That is, white jade should be as advanced as nitrate. It can be seen that nitrate and jade are difficult to distinguish.

However, the facts are different after all. As far as color is concerned, white jade is often blue, and white is rare, while nitrate is pure white. As far as jade is concerned, jade is moist and delicate, as fat as cream. Nitrate is wet, but there are thieves in it.

White jade is a natural product, and it is difficult to have a unified structure, including jade ribs and jade flowers. If nitrates are manufactured artificially, there is no such appearance. White jade has a solid texture and no bubbles can be found.

No matter how well nitrate is treated, bubbles and pores are often exposed. If you know these items, you won't regard nitrate products as jade articles.

Distinguish the quality of jade according to its color, quality and quality. Whether it is white jade, topaz, sapphire or jasper, its jade color must be bright, and the best is not evil, gray or mottled.

As far as jade and jade are concerned, it is required to be delicate and white, pure and free from impurities. No matter what color of Baoyu is, the finer the quality, the better, and the finer the moisture.

Jade jewelry is suitable for people of all personalities and ages. Whether it is a beautiful young girl or a graceful young woman, wearing a sparkling diamond necklace with pure and shiny Baoyu earrings or bracelets will look radiant. Identification of jade is mainly to prevent nitrate from acting as white jade.

It can be identified from the aspects of color, jade, fracture, impurity, specific gravity and sound.

(1) color

The white of white jade is often slightly blue, and there are few people who are extremely white and pure white, while nitrate is evenly white and pure white. After the light is on, nitrate still has a slight orange light.

(2) Properties of jade

One of the properties of jade is moist and greasy, like cream, while nitrate has a bright and moist feeling, but it has a naked feeling, but it has the feeling that thief light flashes in the bright and moist.

(3) Fracture

This is an obvious difference. The fracture of white jade is stony, dull, serrated or serrated, while the fracture of nitrate is material, bright and shiny, and shell-shaped. Although jewelry appraisal can't be destructive, it can be observed through some accidental bumps, unpolished grinding surfaces and corners.

(4) impurities

There will be no bubbles in jadeite, but there will be bubbles in nitrate. Sometimes it is difficult to be observed because of its translucent color, and sometimes it is rare because of its good quality. But as an appraisal, you can't stop without finding evidence.

Sometimes we can check from the surface. If there is trachoma, that is, there are bubbles on the surface, it can also be proved to be nitrate, because white jade does not have this characteristic, and the bubbles inside can also be checked under strong light.

(5) Specific gravity

The specific gravity of jadeite is between 2.9 and 3.1,and the nitrate is about 2.5, which is lighter than nitrate.

(6) sound

The voice of jade is dignified, and the voice of nitrate is crisp. In some cases, jade and nitrate can be identified by their different sounds.

Baidu Encyclopedia _ Jade