Crystal glass is glass made of crystal. Because the texture is hard, brittle, difficult to grind and process, and the output is low, it is also expensive. Identification can be made by the following methods:

1. In the process of rock crystal formation, it is often influenced by the environment and always contains some impurities. When you look at the sun, you can see faint, uniform, tiny stripes or catkin-like substances. The fake crystals are mostly made of inferior crystal slag and glass slag, which are melted, polished and colored, without uniform stripes and catkin-like substances.

2. In the hot summer, because of the material, the crystal will also show a cold state. False crystals don't have this cold state.

3. Under the sunlight, no matter from which angle, the rock crystal will give off dazzling brilliance, but the fake crystal can't.

4. Rock crystal has a high hardness, so it will not leave a trace if you lightly scratch it with a hard object; If there are streaks, it means it is a fake crystal.

Extended data:

Rock crystals are clear and transparent, often containing cloud, star or flocculent gas-liquid inclusions, and often with microcracks. In addition, the rock crystal is polarized, and you can see the phenomenon of twin crystals, such as a crystal ball. Looking down from the top, there will be a double image.

Synthetic crystal or glass products are uniform and pure in the body, without cracks, and often have small bubbles inside. Looking down at the sphere, you can't see the ghost of the line below.

Through touch recognition, we can feel that the proportion of synthetic crystals is greater than that of rock crystals. Crystal stone feels cold and glass feels warm.

Reference: Crystal Rock-Baidu Encyclopedia