Crystal has a particular reputation for being the “fancy” version of glass and is typically used for formal tableware on special occasions. So naturally, this might leave you wondering what’s so special about crystal. The discerning wine enthusiast will want to know how to spot a wine glass that’s made of crystal.
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A typical wine glass is created primarily using sand and a soda-lime mixture. Wine glass manufacturing has come a long way since its origins, which date back to Egypt as early as around 1600 B.C.E. Over the years, glass has become clearer and more brilliant. Within the last 500 years, new techniques and mixtures have produced types of glass that outshine traditional glass. Read on to find out what they are.
Crystal is simply a type of glass. They are manufactured in a very similar fashion to regular wine glasses, with the major difference being chemical composition. In addition to the soda-lime mixture, crystal glasses also have a high lead-oxide content. This is why crystal is sometimes referred to as “lead-crystal” or “leaded-crystal.” The addition of lead oxide makes the glass extra clear and increases light refraction, which adds to the visual appearance of the drinkware.
According to the European Union Council Directive 69/493/EEC, glass must contain at least 24% lead oxide to be considered “lead crystal.” According to the FDA, using crystal drinkware on sporadic special occasions is deemed to be safe. However, it should not be used as everyday drinkware due to health concerns regarding lead. This has led to the creation of lead-free crystal.
From a traditional standpoint, some will argue that there is no such thing as lead-free crystal and that crystal must contain lead to be considered crystal. This leads some to more accurately call it “brilliant glass” or “extra-clear glass.”
No matter what it’s called, it makes sense for there to be an alternative to traditional crystal from a practical standpoint. For those that wish to drink from high-end drinkware on a daily basis, you no longer need to worry about the possible downsides of lead crystal. Today, the majority of the wine glasses you find for sale will be lead-free crystal rather than leaded crystal.
Lead-free crystal substitutes lead for other ingredients such as barium, zinc, or potassium. The mixture creates a glass that is extra-clear and brilliant when compared to normal glass. It has qualities nearly identical to leaded crystal glass.
Crystal has different working properties than normal glass. Specifically, it has a lower melting point and the polishing process is different. After patterns are cut into crystal using diamond cutting wheels, the crystal is polished in an acid bath. The acid polish creates smooth edges where the cuts abraded the glass. Regular glass cannot be polished this way, which typically leaves sharper edges.
Crystal wine glasses might be thinner at the rim. Crystal is less fragile than normal glass. This means it can be made thinner while still maintaining strength.
Under an ultra-violet (UV) light, crystal appears purple, while soda-lime glass appears green.
The term “crystal-clear” has its origins because crystal is more clear than regular glass. Therefore, when comparing the two, side-by-side, you should see a visual difference.
Now you know the differences between standard glass and crystal and how to spot crystal at the next fancy dinner you attend. However, this may leave you wondering if crystal wine glasses are worth the cost. As you can see from the information above, the differences between regular glass and crystal are notable. The added brilliance and clarity of crystal can bring your wine drinking experience to the next level.
On the other hand, for those who want to indulge frequently, you may wish to opt for regular glass or lead-free crystal wine glasses. This could be for health reasons or practical purposes such as not wanting to hand-wash your drinkware.
Whatever you choose to drink from, we have great options to suit your preferences.
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