Stones by zodiac signs

How can you tell if rock crystal is real?

True connoisseurs of this unique material know the difference between crystal and glass. If the glass manufacturing process is based on a combination of lime, soda and quartz sand, then lead is added to artificial crystal. In addition, manufacturers each use their own special recipes for production. Crystal can be identified by certain characteristics. How can you tell crystal from glass?

What is crystal

Before you understand how to distinguish crystal from glass, you need to study what kind of material it is. Crystal is a type of glass material that is infused with minerals. They add shine and make it easier to process, turning glass into crystal. It is made from a mixture of sand, potassium carbonate and lead oxide. The latter gives the material softness, improves polishing and creates a pleasant sound. A large amount of lead oxide improves the process of cutting patterns on walls. The first crystal products appeared at the end of the 16th century. Initially, production was expensive and labor-intensive, requiring skills and time. The first semblance of artificial crystal was created in the second half of the 16th century by the chemist George Ravenscroft. In Europe, such crystal is now called lead crystal. As an experiment, the English scientist D. Ravenscroft added lead oxide, resulting in an artificial type of material. And this is not the only difference between crystal and ordinary glass. The scientist’s goal was to create a composition whose characteristics would be similar to real crystal. As a result, he achieved his goal and obtained material with similar characteristics. The rainbow glowing tints from such crystal were mesmerizing. The ancient Greeks knew exactly why crystal was better than glass and said that this material was ice turned into stone; in their opinion, it warms the soul and cools the hands. After some time, the semi-precious stone, like other jewelry stones, began to be cut. Therefore, due to the beautiful, bewitching play of light, crystal and crystal glass have become the most beloved, welcome guests in the interiors of houses. To this day, crystal products retain their value as a sign of luxury, abundance and high social status. Rock crystal is a type of colorless quartz, which is a naturally occurring crystalline material. Without the use of special tools and equipment, it is not always possible to understand how to distinguish rock crystal from glass. However, you can still distinguish it from glass by 2 characteristics:

  1. Glass always contains gas bubbles of various shapes, while rock crystal does not.
  2. When examining the lumen of the glass, you can see lines – flow lines of the liquid and viscous material of which the glass is composed. Such streaks are absent in crystalline materials.

The artificially created material usually contains lead oxide, which makes it different from glass. Crystal has a completely different composition and is a single crystal of silicon dioxide.

Quartz is characterized by stability, hardness, high heat resistance, slow dissolution, melting at temperatures above 1700 degrees and is not subject to destruction even when suddenly cooled from a hot state into cold water. Artificial has a lower degree of hardness, is more vulnerable to aggressive environments and thermal shocks, and has optical properties similar to precious stones. This is the difference between crystal and crystal glass.

Types of crystal

There are several types of artificial and natural materials that can be classified by composition. The following types of glass and crystal are distinguished:

  • Lead crystal is characterized by durability and strength.
  • Rock crystal is a real mineral, an amazingly beautiful material that is ideal for the production of jewelry and services.
  • Bohemian crystal is an artificial version of the material. To understand whether Bohemian glass is crystal or not, you need to study the technology of its production. In fact, the basis for its creation is ordinary glass, to which calcium-potassium compounds and even copper are added. The result is a material that resembles crystal glass.
  • Barium crystal – similar to lead crystal, but with the addition of barium.

Crystal differs from ordinary glass by the presence of PDO in its composition. This is a special component that increases the plasticity of the material and makes it suitable for jewelry cutting.

How to distinguish crystal from glass

Most often, people do not know the difference between crystal and glass. This material can be natural, extracted from natural minerals (colorless quartz). Such quartz can be found in river pebbles. This mineral is popular in jewelry; glasses, sets, vases, etc. are made from it. The artificial material is created from glass and lead oxide. Sometimes artificial products are very similar to a natural mineral. How to understand this and identify a crystal or glass product? To do this, you need to run several tests.

Many people are interested in how to check whether crystal or glass was purchased in an antique store. To do this, you need to know what characteristics it has. In addition, it is important to know what kind of glass crystal is made from. Characteristics of crystal for which products made from this material are chosen:

  1. Acid resistance.
  2. The homogeneity of the material without inclusions or bubbles is what distinguishes Bohemian glass from crystal.
  3. Excellent density, preventing scratches, unlike glass.
  4. Noticeable weight even for thin products.
  5. Transparency – before you can distinguish crystal from glass, you need to look through the walls of the product into the light. This material has a high level of transparency.

The process of producing artificial crystal occurs at high temperatures and heating up to 1500 degrees. At this time, the mixture of sand, potash and lead oxide begins to melt. Next, the required products are formed by blowing and the models are thermally treated in a special oven.

Then the crystal product is checked for unevenness, bubbles and other defects. Finally, the products are decorated. There are several ways to determine the authenticity of crystal products without the need to take them to a laboratory.


The difference between crystal and glass can be seen even at home. One way is to tap the walls with your fingertips, avoiding using heavy objects. A ringing or noise should be heard upon impact. Since you can recognize crystal or glass by sound, you should listen carefully. If you have artificial crystal or ordinary glass in front of you, then there will be no sound effect.

The difference between crystal and crystal glass can also be determined by the sound that is heard when two products hit each other. This material will vibrate subtly when in contact with another material of the same type. If there is no musical sound after you knock on the crystal, then this is ordinary glass.

The weight

Thanks to the weight of the antique product, you can understand how to determine crystal from glass. The presence of lead in crystal makes it heavier than glass. You can feel the difference by holding a product made of real crystal in one hand and glass in the other. Fake crystal will be much lighter.


By checking for strength, you can also understand the difference between crystal glass and crystal. A genuine product is highly durable and practically scratch-resistant, while a fake product easily develops defects due to its low scratch resistance.

Light refraction

If you hold the crystal up to the light and carefully examine it, you will notice a shimmer of light similar to a rainbow. The absence of such overflows indicates that this is ordinary glass. Light refraction is another way to understand how crystal differs from ordinary glass.

Thermal conductivity

Another way to distinguish crystal from glass at home is to use hot water. To do this, you need to take 2 identical crystal and glass products. Then pour warm water into them and touch the walls with your palms. Real crystal will be several degrees cooler. The thermal conductivity test is a simple way to test crystal or glass at home. This material has low thermal conductivity. Glass objects quickly take on the temperature of the human body when touched, while crystal objects remain cool even after prolonged contact with the skin. Therefore, crystal glasses are most often chosen to enjoy champagne.

Ask a question about antique furniture

Rock crystal (silica family) is a type of quartz, colorless and completely transparent crystals shaped like a hexagonal prism topped by a pyramid.


The term “crystal” is the Russian form of the Greek word “kristallos”, which means “ice”. Due to its external similarity, transparent quartz, which in ancient times was considered strongly hardened ice, came to be called a crystal. In Russian terminology, until the second quarter of the 19th century, crystal and crystal were synonymous and used together. Only later did natural polyhedrons of minerals begin to be called crystals, and quartz became crystal with the addition of “mountain”. Crystal is simply called heavy, highly refractive glass with the addition of lead.

Balls made of glass and rock crystal, identical in size and appearance, are felt differently by the hand. Glass quickly warms up, but rock crystal remains cold. In ancient Rome, wealthy patricians used large crystal balls to cool their hands in the heat. It turned out that rock crystal, unlike glass, easily conducts heat. It seems to take heat away from the body and absorb it with its entire mass. And glass quickly heats up from the surface, although the inside may remain cold.


For thousands of years, seals, vessels, cups, jewelry, ritual and magical objects were carved from rock crystal. Now rock crystal is used in radio engineering, optics and jewelry.

Rock crystal jewelry on sale

You can’t go wrong with rock crystal jewelry. The stone, due to its high hardness, performs well when worn; such jewelry is easy to care for and is not afraid of the sun’s rays.

Earrings with rock crystal in the form of ice crystals are especially good. The assortment in our online store is constantly updated. Stay tuned for more rock crystal jewelry.

Analogues of rock crystal

Most often, imitations of natural crystals are made from glass. Crackle quartz (snow/ice/sugar quartz) with cracking inside is a Chinese analogue of rock crystal, heat-treated glass. Colorless specimens of the mineral fluorite can be confused with rock crystal, but the former is very fragile. The artificial material is made by adding lead and barium oxide to ordinary glass, and chandeliers and glasses made from it are sold.

How to distinguish rock crystal from a fake

All quartz crystals, including rock crystal, are characterized by high hardness. In terms of hardness, stone differs significantly from glass (5 points). Therefore, all glass fakes made of rock crystal are easy to identify – they are all susceptible to scratches and quickly heat up in your hands. And the natural variety of quartz has lower thermal conductivity.

How else can you spot a fake? It is enough to look at the stone with the naked eye: real rock crystal almost always contains all kinds of inclusions, unlike glass. And the edges of a faceted natural specimen are clear.

Rock crystal: magical properties and astrological compatibility

Rock crystal crystals can be right- or left-handed, since during the growth process the crystals spiral, and some of the small faces are present on either the left or right side. According to the Japanese, only a left-sided crystal can give the owner good luck and longevity, while a right-sided one can take all this away.

Rock crystal is a stone of magicians, mediums and clairvoyants. It is considered to be a universal stone that combines well with other minerals, enhancing their properties and energy.

Astromineralogy does not give a definite answer to which of the zodiac signs rock crystal is suitable for its properties. It is considered a universal stone.

Rock crystal in jewelry Color: colorless. Hardness: 7 points. Density: 2,65 g/cm³. Rock crystal (silica family) is a type of quartz, colorless and completely transparent crystals, shaped like a hexagonal prism topped with a p.

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