Half a catty of crystal wine glasses

Half a catty, eight liang liang crystal factory director wrote it himself! All rights reserved! No misappropriation! Baidu Encyclopedia-Crystal Glasses means half a catty of crystal is involved in writing! ! Crystal glass can be divided into three categories according to the current market scope.

One is artificial crystal glasses.

Under normal circumstances, artificial crystals artificially simulate the growth environment in rock crystals. In a high-pressure container, silicon dioxide powder is put, and then three conditions of high temperature, high pressure and high humidity are applied. Silicon dioxide powder (that is, crystal powder) grows at a rate of 0.8 mm per day, and this powder is called artificial crystal. Many so-called artificial crystals on the market are actually formed by adding a certain amount of lead. The correct name is craft crystal.

The second kind is smoke crystal glasses.

This is a kind of fog cotton-like crystal. The lens is foggy against the sun and has no clear features. There are cotton-like crystals in the lens, which are now called ice crystals. (The disadvantages of wearing them will be discussed later) Generally, people in the industry simply don't know what smoke crystal glasses are.

The third kind is rock crystal glasses.

Crystal is the crystal of natural seasonal ore, and its composition is silica crystal. Crystal glasses are made of crystal original stone, cut and polished.

In ancient times, someone has made crystal glass. The first glasses were made into round lenses. At that time, there were no frames such as plates and plastics, and only original silver or copper frames were made. . Crystal is hard, brittle, hard to grind and process, and raw materials are scarce, which makes crystal glasses expensive. In addition to the traditional inertia, it is important to come from its inherent characteristics: good transparency, high definition, fine and hard texture, and it is not easy to be polished when it meets sand. This feature makes it suitable for people in windy and sandy areas, especially for drivers of barrier-free motorcycles and walking tractors. It's cool to wear a crystal tea mirror in the strong sunlight; Crystal lens has good thermal insulation performance, which can reduce the impact and stimulation of heat wave on eyes for people engaged in high temperature operations such as boilers and smelting. Crystals can withstand the corrosion of common acidic solutions, such as sulfuric acid, hydrochloric acid and other chemical acids. People engaged in this kind of work wear crystal glasses, which have a good eye protection effect. .

Now in our country, most people wear crystal glasses are from the northwest, and a few people in the south know and understand the crystal glasses culture and get recognition, but few people wear them among young people. The main reason is that the culture of crystal glasses has not been passed down, the second reason is the rapid development of resin optics, and the third reason is that crystal glasses are heavier than ordinary glasses, so crystal glasses have been forgotten. .

The varieties of crystal glass are white crystal glass, brown crystal glass (sunglasses) and yellow crystal glass. White and tan are the most common, but yellow crystal glass is rare. One is related to the sales volume of the industry and the popularity of ordinary people, and the other is related to raw materials.

Benefits of wearing rock crystal glasses to cure eye diseases: A crystal glasses are called eye protection glasses by ophthalmologists, which can remove bloodshot and erythema of eyes. Patients with "fire eye" and "red eye" can be cured without taking medicine.

Second, patients with glaucoma, wearing rock crystal glasses is very helpful for eyes and treatment. Doctors in major hospitals recommend that postoperative glaucoma patients wear crystal glasses, which can better help restore and protect their eyes. Eye protection: crystal cool, heat insulation, radiation protection and corrosion resistance. Especially those engaged in smelting and chemical industries, the eye protection effect is particularly good. Eyes, eyes, eyes are not tired after driving for a long time. HD: Wearing crystal glasses in a dark room is far more clear than glasses made of glass or plastic resin. Radiation protection and ultraviolet protection: Because of its high density, crystal glasses can better block the radiation interference of electrical appliances, such as watching TV and surfing the Internet, thus protecting eyes more effectively.

. Nowadays, there are more and more people surfing the Internet. Whether online sellers or office workers are inseparable from computers. Often surfing the Internet can lead to dry eyes, confused thinking, physical discomfort, and often tears for no reason. All this will magically disappear after wearing crystal glasses. So now crystal glasses are also called computer goggles and radiation protection glasses. . .

How to identify crystal glass 1? Generally, crystal glasses sold in the market will have cotton wool to prove that they are crystal glasses.

2. The price of real crystal glasses is also very high (high price refers to high-grade lenses, and of course there are crystal lenses with a price of 100 yuan, but the grade of these lenses is too poor, and most of them are made of cotton. Ice cracks affect vision) 1, 200 yuan, also known as AA, is undoubtedly an artificial crystal.

3. The crystal is placed on the hair bundle, and the rock crystal is the kind that the human eye can see the double shadow of the hair bundle through the crystal, mainly because the crystal has birefringence.

4. There is little difference in hardness between artificial crystal and rock crystal, so it is impossible to tell the difference between rock crystal and artificial crystal with glass. But another characteristic of crystal and artificial crystal is the luster of crystal. The surface of rock crystal is oily luster, while the surface of artificial crystal is glassy luster.

Nowadays, with the rapid development of science and technology and the upgrading of technology, many ancient methods are no longer suitable for the identification of rock crystal glass, especially when it comes to high-grade crystal glass, the inclusions can not be detected by 40 times magnifying glass and ordinary instruments. The most authoritative, fastest and simplest thing is to issue a formal CMA authoritative appraisal certificate (of course, you must bring a formal invoice with the appraisal certificate). Highly recommended.

Nowadays, the chaotic crystal glasses market is a tourist area.

Nowadays, more and more people travel, and more places are desired. This also allows businesses to seize many opportunities. Crystal glasses and accessories are one of them. 99% of the crystal glass sold by merchants in tourist areas all over the country is artificial, but it is actually natural, and it is also low-quality and inferior crystal glass. 1. It's because the merchants caught the consumers who didn't understand, 2. It is impossible for consumers to visit a place several times. It is impossible for consumers to recognize only a pair of glasses bought from far away. Most consumers just buy a souvenir. Therefore, it is normal for artificial crystals with tens of dollars to sell for 5600 yuan in tourist areas.

Trade fairs all over the country

Trade fairs will be held all over the country, which also allows businesses to seize the opportunity. Merchants go to this local trade fair once a year, and consumers can't contact them even if they buy artificial crystal glasses. Protecting rights is even more impossible.

Third, local businessmen sell

There are fewer crystal glasses in the south, but as the north or northwest, there are still more businesses selling crystal glasses. They are all mixed with artificial crystals and rock crystals. Basically, they are all from rock crystal, where the low-grade quality is basically 4500 or 560 1 pair, and the mid-grade quality is around 1000 to 2000 yuan. There are basically no advanced lenses, but there are, and the price is very expensive. Because the price of advanced lenses is very high, many people don't know about crystal glasses, so the price is high, and many consumers are still unwilling to accept it.