There are roughly the following nine ways: 1. Seeing: In the formation process of natural crystals, it is always influenced by the environment and always contains some impurities. When observing the sun, you can see a faint even and small horizontal stripes or catkins. The fake crystals are mostly made of slag and glass smelting, and they have been polished and coloured to imitation. There are no uniform stripes or catkins. ---Crystal Information Shaoxing City Shenglin Import And Export Co.,Ltd , https://www.shineogroup.com
2. Tongue licking: Even in the hot summer days, there are cold and cool feelings with the tongue licking the natural crystal surface. Fake crystal, no cool feeling.
3. Light: Natural crystals are placed under the sunlight. No matter from which angle you look at them, you can release beautiful brilliance. Fake crystal can not.
4. Hardness: The hardness of the natural crystal is large. Grab the stone gently on the jewelry and leave no trace. If there is a streaking mark, it is a fake crystal.
5. Examination with polariscope: In the polarizer, 360 degrees of rotation are natural crystals with four dark changes, and no changes are false crystals.
6. Check with two colors: Natural amethyst has dichroism and false crystal has no dichroism.
7. Use a magnifying glass to check: Use a ten-fold magnifying glass to check under transmitted light. The bubble can be basically found as false crystal.
8. Check with the hair: The crystal is placed on a hair. If the human eye sees the double shadow of the hair through the crystal, it is a natural crystal, mainly because the crystal has birefringence.
9. Detection with a thermal conductivity meter: Adjust the thermal conductivity meter to a green 4 grid test gems. Natural crystals can rise to 2 squares in yellow, and false crystals do not rise. When the area is large, it rises to a yellow grid.
More crystal information in China Crystal Industry Network, China Crystal Industry Network official website: http://sjcyw.99114.com/
June 14, 2023