Crystal wine glasses are made of fine, thin glass, also known as crystal glass. Normal glass makes a dull sound when toasting. Crystal glass makes a beautiful singing sound. Another advantage is that crystal glass is less fragile due to the composition of the glass. Everything you want to know about the different types of glass and how it is made can be found in this blog.
What is glass made of?
Glass consists of sand, limestone, metal oxide and alkali oxide. The composition of these substances is different for each type of glass. By heating the ingredients at 1500 degrees you can make a beautiful glass. Thanks to the high temperatures, you can move the glass in all kinds of shapes. This means that a red wine glass, white wine glass and other glasses have different sizes.
crystal glass
We speak of crystal glass if it contains at least 10% metal oxide.
Potassium ensures a nice clear and transparent glass. Thanks to the addition of zinc, the crystal glass glasses can simply be put in the dishwasher without unsightly streaks. And pure sand ensures that no greenish effects appear in the glass.
The table below shows the different proportions that make up the types of glass. Lead glass is no longer made in India because of the amount of lead.
Crystal wine glasses
Officially, crystal glass is glass that contains lead oxide. According to European standards, this is even if it contains at least 24 percent lead oxide. Full lead crystal contains at least 30 percent lead oxide.
Lead oxide may no longer be used in India. You would think that you would no longer be allowed to call any glass crystal glass. But because metal oxides are processed in crystal glass, you can just call it crystal glass.
Lead oxide and the dishwasher
Nowadays almost everyone has a dishwasher. And if possible, we also just put our wine glasses in there. Wine glasses made of metal oxide can go in the dishwasher and nothing will happen to the colour or taste. And your dishwasher will survive this too.
Glasses made of lead oxide cannot be put in the dishwasher. This will leave grey marks in the dishwasher. What you then see on the other dishes.
Wine glasses from India
The crystal glasses from India are of high quality. This makes the glasses more durable, dishwasher safe, break-resistant and also more brilliant than other glasses with cheaper glass compositions.
Indian crystal glass
That's why you want wine glasses made of crystal from the Indian shop:
Crystal glass contains a minimum of 10% metal oxide. Elements such as potassium improve light refraction and transparency and make the glass more brilliant.
Zinc stands for chemical durability and finally dishwasher safety.
High-quality sand makes glasses shine transparently and brightly.
Pure sand that contains very little iron avoids greenish or other coloured effects in the glass.
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