Natural crystal identification

Fake crystals are mostly made of crystal slag and glass smelting, and then polished, colored and patterned. Therefore, the following methods can be used for identification:

1. Glass is a homogenous body and does not show ghosting on objects underneath it. Natural crystals are non-homogeneous and have birefringent properties. Therefore, the crystal to be measured is placed on a hair filament or a thin object, through natural The objects below the crystal should be double-imaged;

2. Vitreous bubbles appear in the glass body. With a 10x magnifier inspected under transmitted light, the bubble can be basically identified as false crystal;

3. Glass may exhibit indentation during casting or spiraling during blowing;

4. The natural crystal is harder (7), and it can be easily scratched on the jewelry with ordinary tools, leaving no traces. If the knife is entered (marked with streaks), it is a fake glass or smelted with crystal slag and glass slag. ;

5. The natural crystal stands vertically under the sunlight, and it can give off beautiful brilliance from any angle. When you look at the natural crystals facing the sun, you can see a faint, uniform, thin streak or catkin-like material. Fake crystal does not have the above characteristics;

6. There is a saying: even in the hot days of the dog, licking the surface of the natural crystal with the tongue, but also have a cold and cool feeling. Fake crystal is no cool feeling. This method may wish to try.

In addition, it is also possible to use a professional instrument such as a polarizer, a thermal conductivity meter, or the like for detection at the inspection station.