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Glass and Crystal

Glass and Crystal
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What is even more glass and what is crystal? In various countries, the rule for determining what is crystal glass and what is different. For example, in America, just 1% of lead content in the glass so that we talk about moths crystal. It is generally understood as a crystal glass of high quality and either refined or enriched with lead glass.
According to European standards, glass goods containing less than 4% lead oxide known as "glass" when it contains more than 10% lead, we talk about crystal products containing more than 30% naming it as a high-lead crystal. Lead is added to the glass first, because the glass softens and adds his weight. This results in improved workability and then the refraction of light. Due to the breaking light falling on the surface of the rainbow colors. We also know crystal containing less than 24% lead, but not containing barium oxide and this again causes a high refraction of light.

What is even more glass and what is crystal? In various countries, the rule for determining what is crystal glass and what is different. For example, in America, just 1% of lead content in the glass so that we talk about moths crystal.
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Bracelets generally

The bracelet is jewelry that is worn around the wrist. Be made from leather, string, wood, metal or plastic. Some bracelets also contain stones and jewels. In addition to the decorative features can serve as an identification or medical aid.
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Rings general

The ring is a jewel in a ring-shaped beads on the fingers. Most often made of precious metal, but may be from natural materials such as wood and is decorated with ornaments, semi-precious stones.
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Jewelry general

Jewel (otherwise a gem or jewel) is also a valuable ornaments. Is usually either made from precious metals or precious stones. Jewel the night on the human body, usually the more he wears women.
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Earrings general

Earrings are jewelry that is worn on the ear. We can meet them for women in men. Earrings are made of different materials, but most of the metal - silver, gold, steel, platinum, etc., but also plastic or natural materials - wood, ivory.
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History of Crystal

The word crystal comes from Old Greek “crystal: whish means “ice” and because of its clearness and hardness it started to be used for the mineral as well. In glass industry they started to use the name “crystal” in Murano in 16th century. It happened when glass masters cleaned the green touch off the glass.

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