How to distinguish between crystal and glass


[China Glass Network] When we talk about glass products, most people think that the better way to identify the quality is to let the glass make a squeaky sound, and then listen. If you can find quality crystals through your eyes, then you can leave your ears on vacation for a day. why? The squeaky sound of the glass is subjective, in fact, it won't tell you the quality of any one glass. The general idea is that a high-pitched voice represents a piece of valuable crystal, but this is not always the case. A piece of glass that sounds good doesn't mean it's a valuable crystal. It needs to be confirmed by other important factors whether it is a real crystal.

Glassware (traditional ordinary glass) contains approximately 50% quartz sand and is lead free. Crystal contains at least 24% lead. This is the basic difference between crystal and glass.

Most people don't think that the orange juice glass they use every day is a crystal. The orange juice glass that people drink every day is made of ordinary glass. In our daily lives, glass is often referred to as ordinary glass. Usually used for windows, beverage bottles, and more. Most of the glass products made in the United States today are ordinary glass, which is a mixture of lime, quartz sand and soda. This is a cheaper glass product that is harmless, odorless and does not require much investment.

On the other hand, borosilicate glass, which was called fire-resistant glass at the beginning of the last century, is now a heat-resistant glass because of its brand name Pyrex. It is not exposed to extreme temperature changes. Will break. More expensive than ordinary glass. This type of glass was first introduced into the windshield of trains in order to prevent windows from being damaged in severely changing weather. Boron silicate glass is mainly used in laboratories and is not susceptible to corrosion. Neither of these glasses is crystal because they do not have 24% lead.

Crystals consist of silicon dioxide, lead oxide and soda, which are usually more aesthetically pleasing and harder. Crystal is a term used to describe any fancy glassware. Crystal is the choice of spirits and wine connoisseurs because it allows drinkers to assess the color and viscosity of wines or spirits. If the crystal is clear, it may contain a lot of lead.

The refractive index of the crystal and the lead content of 24% are more important features. Crystal is more transparent than ordinary glass and has better refraction, so it is used for chandeliers, exquisite wine glasses and pendants. Very fine crystals – like those of high quality companies such as Waterford – may even exceed 24%, 30% or more.

The difference between ordinary glass and crystal is as follows:

Crystal has the following properties: 24% lead content, large refractive index, clear appearance, silver or silver/purple color, when there is a rainbow prism effect against the light, thinner and heavier than ordinary glass.

In fact, crystals with a lead content of more than 35% are very shiny. Fine glassware may contain some lead, but if the lead content does not reach 24%, it cannot be called "crystal".


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