A good crystal ball above 10 centimeters is worth 10,000 yuan to several hundred thousand yuan. Due to the economic interests, illegal traders take glass balls to pose as crystal balls to gain profits. Whether the natural crystal ball is actually a crystal ball or glass ball is very simple and reliable. Just use a hair on a white paper, press the ball on the hair, keep moving the ball and observe the change of the hair through the ball, and find that the hair double shadow is a crystal ball, if any direction of movement is Can not see hair double lens is a glass ball. This is because crystals have birefringence while glass is amorphous and only refracted.
The jewellery market is worthy of the crystal treasures and exquisite products, as well as crystal-like crystal products. Crystals are glass products. If it is a very leisurely matter to identify true and false in the presence of instrument detection, consumers cannot purchase crystal ornaments with equipment. Therefore, it is very important to have some simple identification methods to avoid being deceived.
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