Crystal identification: (1) At first glance, rock crystals always contain some impurities due to the influence of the environment. When you look at the sun, you can see tiny and even stripes or catkins. Fake crystals are mostly made of inferior crystal slag and glass slag. After polishing, coloring and imitation, there are no uniform stripes and catkin-like substances.

(2) 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.

(3) Illumination: When the crystal is placed vertically in the sun, it can emit beautiful light from any angle. Fake crystals can't.

(4) Hardness: The hardness of the crystal is very high, and it will leave no trace when lightly scratched with gravel on the jewelry; If there are streaks, it is a fake crystal.

Another feature that distinguishes crystal from artificial crystal is its luster. The luster of rock crystal is very mild, unlike synthetic crystal, which is very dazzling.