The delicate ting of fine crystal stemware can be as much a part of the process of delighting in fine wine as is the satisfying plop of a natural being extracted. If you've ever sipped out of a fine crystal wine glass, you already know it's different from a plastic material cup, or even a glass cup. But why? Is it just simply perception, or is there good discernible difference? First, a number of definitions are in order. Merriam-Webster defines glass as "any of various amorphous materials created from a melt simply by cooling to rigidity not having crystallization, " and procedes specify "a usually see-thorugh or translucent material consisting typically of a mixture of silicates. " Merriam-Webster defines ravenscroft as "a clear muddy glass of superior quality; also objects or ware of such glass. " As a way the term relates to stemware and drinking glasses, we are generally talking about a transparent material made from a mixture of silicates. The most common type of glass is soda-lime glass, composed of about 74% silica. Interestingly, when lightning strikes sand, "fulgurites" can build, which is glass that is an idea of the lightning strike. Denoting the difference between crystal and glass is not particular. All crystal is decanter or glass, but not all glass is undoubtedly crystal. There are no common rules that define crystal, and different countries use different requirements for defining crystal. That said, the lead content of glass is the main determinant in the classification of something as either glass or crystal. The number of lead that defines crystal varies amongst countries.
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