Crystal is a colorless and transparent large quartz crystal mineral. Its main chemical component is silica. The crystal is colorless, purple, yellow, green and smoked. Glass luster. Transparent to translucent. Crystal is rare because of its natural nature. How can such a beautiful thing be so rare? Thus, there are many imitations in the world, and glass is one of them. Although the hardness of the two is quite different, it is not allowed to be inscribed on the finished crafts. So, how do we identify crystal and glass?
1. If the conditions permit, clean the handicrafts to be identified. After drying, use the tip of the tongue to touch the crafts. If there is a cold feeling, it is a crystal product. If it is warm, it is a glass. However, this experimental method is not accurate and is susceptible to external temperature differences and personal feelings.
2. It is better to carry a magnifying glass with you, and to observe the crafts with a magnifying glass. The artificial products will be somewhat awkward. In the interior of the glass, there will often be swirling or curved curved lines caused by uneven melting. Crystals There is absolutely no. In addition, there are often many bubbles in the glass, and there are few in the crystal.
3. Using newspapers is a simple and efficient way to read newspapers under the crafts. If it is a crystal product, the words on the newspaper will appear double shadow, and the glass will always be a single shadow!
4. If you want to test crystal glasses, you can use a polarizer. Adjust the polarizer to the orthogonal position. At this time, the field of view is completely black. Then place the crystal spectacle between the upper and lower polarizers. The lens and the polarizer should not be strictly parallel. The lens can be slightly tilted so that the lens and the polarizer have a Cross the corners and then rotate the spectacle lens. If it is made of real crystal, there will be obvious brightness changes in the field of view. If it is always dark when rotating, the spectacle lens is made of glass or crystal glass (glass melted with inferior crystal).
5. If you want to buy crystal glasses while traveling, it is not convenient to carry a polarizer at this time. You can take two polarizers (or two of the smallest photographic polarizers) with a diameter of less than 40mm. When measuring, one person holds two polarized lights. The film makes it orthogonal to black, and the other person holds the lens and rotates between the two polarizers. If there is a significant change in brightness, it is a true crystal product. If the darkness does not change, it is a glass product.
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