Lead and glass
A Czech glassblower Mueller conducted experiments with lead and glass and made the famous Bohemian crystal in 1684. Today the Bohemian products made from glass and lead are very popular and will take a significant place in your interior.
- But why?
- Bohemian glass
- Lead and glass
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Today it is a well-known practice to make a lead glass. But how people decided to mix lead and glass? or how to do it at all? Let’s know it!
What is the difference between the lead glass and the usual one? The main difference is the replacement of calcium oxide in the ordinary glass, with a lead oxide - in the crystal. Crystal is a very soft and fusible material. And it is more heavyweight because of the lead is a part of it. Its appearance is characterized by its shiny surface with a high coefficient of refraction.
The manufacturing process of crystal products takes place in special furnaces at a temperature greater than 1500 degrees. Presence of additives provides a stability in the crystal products to various mechanical influences.
Bohemia, is one of three historical centers in the Czech Republic. The technology of engraving on the glass was revived in the XVI century in Bohemia. Initially, the technique used to decorate various cups and glasses made of rock crystal, and only then people began to decorate other glassware. Czech glassmakers fairly quickly began to compete with the Venetian masters. Their advantage was a special strength and faceted products from Bohemian glass, so gradually Bohemian crystal, took a priority, which previously had the Murano glass of Venetian glass blowers. Despite his outward amazing beauty, Murano glass is fragile and, for example, the Ottoman sultans often chose the Bohemian one.
Lead and glass
In 1674 in England, the scientist George Ravenscroft conducted experiments to find imitations of the real diamonds, a hard mass. He was trying to improve the different optical properties of glass and he added a lead oxide to its structure. So he was the first one, who mix glass and lead. Because of this restructuring, the glass was a very hard, brilliant and clear material. His experiments continued one glassblower from the Czech Republic - Mueller in 1684, he made Bohemian crystal.
Today the production of Bohemian glass is improved, it is divided into two subtypes: Bohemian crystal and painted glass with a smooth surface. Depending on the type of further processing, they distinguish polished glass, painted and engraved one.
What is the secret of Bohemian glass beauty?
The main properties of this glass that in the process of cooling it becomes shiny, firm and crystal-clear material. Then, neat-handed masters of engraving and polishers give that luster to the product. Thanks to their work the glass becomes sparking like a diamond. Today, old traditions are used in this production, so crystal is a hand-polished material too.
Depending on the percentage of lead oxide, in the process of Bohemian glass manufacture are three groups of crystal products: premium-class - about 33%, the standard - up to 30%, and traditional glass up to 24%.
Check it now
Check the authenticity of Bohemian glass can be simple - it is enough to slightly moisten finger and touch the edge of the glass. If it is true Bohemian glass, it will “sing” for you literally, and if it’s fake so it isn’t, of course.
Glass industry in the Czech Republic is considered the oldest in Central Europe. Products made of Bohemian glass - crystal glasses, vases, table lamps, chandeliers - will take their rightful place in your interior, combining impeccable style, the highest quality features and cutting-edge design.