Where is the best crystal in China? How to tell the true from the false? Can you burn it?

Donghai Crystal is very famous in China. Donghai crystal is the distribution center of crystal raw materials in the world. Donghai County, Jiangsu Province, which has the reputation of "Crystal Capital", is famous for its large reserves and pure texture. Donghai Crystal was selected as one of the 20 "Jiangsu symbols" in 20 13. The development and utilization of Donghai crystal can be traced back to19th century, but it has been known for decades, especially in recent years, with the continuous success of the government crystal festival, many people have learned about Donghai through crystals, and many enterprises and institutions have learned about the crystal enterprises in Donghai through the demand for crystals. The huge trade volume has made the East China Sea a distribution center for crystals in the world.

It is impossible to distinguish true and false crystals with fire. Crystal identification is mainly based on the following points:

Hold your hair: Because the crystal is heavier than glass, put it in your hand. If it feels heavy, it is crystal stone. If it floats lightly, it is an artificial crystal.

Thoughtful method: Because the thermal conductivity of crystal is better than that of artificial crystal, put the crystal in this place. If it feels cold, it is crystal stone. Otherwise, it may be artificial crystal.

Lick your tongue: even in the dog days of hot summer, licking the surface of the crystal stone with your tongue will feel cold and cool. Fake crystals are not cool.

Test with thermal conductivity meter: set the thermal conductivity meter to green 4 squares to test the gem. Rock crystals can rise to yellow 2 squares, false crystals do not rise, and when the area is large, they rise to yellow 1 square.

Hardness: the hardness of the crystal is very high, so it will be lightly scratched on the jewelry with gravel, leaving no trace; If there are streaks, it is a fake crystal.

Check with a polarizer: the rock crystal has four bright and four dark changes when it rotates 360 degrees under the polarizer, and the fake crystal has no change.

Appraisal: It is recommended to carry out scientific appraisal through national appraisal institutions, which is the most practical method!