What is crystal glass?
Crystal glass is called artificial crystal. Due to the scarcity of rock crystals, it is difficult to mine and can not meet people's needs, artificial crystal glass was born. Because of its high permeability, it can be made into various handicrafts and is very popular.
The difference between crystal glass and glass:
Ordinary glass is a transparent solid material, which forms a continuous network structure when melting, and its viscosity gradually increases and hardens during cooling, and it will not crystallize. The chemical oxide composition (Na2O CaO 6SiO2) of ordinary glass is mainly composed of silicon dioxide. Widely used in buildings, used for wind and shading, belonging to a mixture. Float glass is divided into float glass and lattice glass, both of which are of good quality.
Crystal glass and glass are very similar in appearance, but they are two completely different substances. The main differences are as follows:
1, different materials: crystal is a crystal of silicon dioxide, and glass is just a molten mixture containing silicon dioxide.
2. Different functions: glass has only decorative function, while crystal has piezoelectric function besides decorative function, which has special health care function.
3, the price is different: the unit price of crystal is several times or even dozens times higher than that of glass.
4. Different physical properties:
(1) Crystal has a high hardness (Mohs 7), while glass has a low hardness (Mohs 5.5), so the crystal can mark the glass, otherwise it can't.
(2) Crystal is a kind of crystal with good thermal conductivity, and it will feel cold when touched with the tip of the tongue. The glass looks warm.
(3) Using a polarizer, crystal can transmit light, but glass can't.
According to the different physical properties of crystal and glass, we can distinguish them conveniently.
5, the processing technology is different: the glass can be hot-cast, which saves materials and labor and has low cost. Crystal is a crystal, which is irreversible after heating and melting, so it can't be molded by hot casting, but only by cold working methods such as cutting and grinding. Waste of materials and manpower, high cost. Crystal has high hardness and is not easy to wear. Glass has low hardness and is easy to scratch. The crystal has good stability and will not change color after long-term use. While glass tends to turn yellow.
Identification method of crystal glass and glass;
1. sound: tap or flick with your finger. Crystal glass can give off a crisp metallic sound and ripple a beautiful aftersound in the air. In the movie, we will see the shots of clinking glasses at cocktail parties and high-end banquets, and the glasses collide and make that crisp sound. The sound of high, middle and low grade crystal glass is also different. It sounds that some low-end crystal glass or ordinary glass is boring.
2, feel: the same volume of crystal glass and ordinary glass weight is not the same. High-grade crystal glass will make you feel calm and heavy. Similarly, the lower the grade of crystal glass, the lighter it will be. The weight of ordinary glass is even more self-evident.
3. Glossy: Turn a high-grade crystal glassware against the light, and you will find it is like a beautiful handicraft. White, crystal clear and reflecting charming colorful light, while low-end crystal or ordinary glassware will have a big gap in the above aspects. What's more, there will be a lot of bubbles in some ordinary glassware, which will also look dirty and dark.
The related content about crystal glass is shared with you here. I hope it will help you understand crystal glass. Please continue to pay attention to us for more related content.