Crystallization device

Crystallization device.

However, when we want to get really beautiful crystals at home, and it is made of materials that are difficult to dissolve in water, we can use another way, although also included among the methods of crystallization from solutions. For this purpose …

Strength

High-quality steel has equal strength 1 000 MPa. Meanwhile, already in 1923 years were calculated, that the crystal strength of ordinary table salt should be 5000 MPa, so five times more. According to the same calculations, pure iron should have even greater strength, …

Crystals

Anyone can grow a crystal. Each, who only wants to, and without any special devices, chemicals or laboratory equipment. All you need is willingness and patience. Before that, however, I propose to inspect the crystals. The most beautiful crystals can be found in the geological museum. Są tam

Grinding gemstones

Let's go back to beauty. Some of the artificially colored stones imitate other stones. But there are also such, like diamond or agate, which remain themselves after coloring. They are only more beautiful. You can also make stones more beautiful by other methods – by polishing them, zwiększenie gładkości

Imitations of precious stones

In recent years, physics has once again intervened in the production of imitation jewelry. Artificial, glass, colorless and transparent stones are provided with a layer… interference. We remember, that the interference is the effect of refracting and overlapping light waves in thin layers, e.g.. oleju

Mountain crystal

In later times, imitations of precious stones were made of melted rock crystal, today they are made of special glass. It is a mixture of lead oxides, silicon, potassium carbonate and borax, which is drowning, casts, a następnie szlifuje aż do uzyskania formy klejnotu.

Artificial stones

Artificial stones.

We know for sure, that they were produced in ancient Egypt and Mesopotamia, and this already in the third millennium BC. Initially as ornaments with a magical meaning, and later as beads for necklaces, earrings and bracelets. About 1400 year BCE. …

Coloring of gemstones

In the group of almost real stones, one can be called "completely real."”. I'm talking about aquamarine, a stone the color of sea water. But the color may be different: yellowish green, green and highly valued – sea, greenish blue. Nieszczególnie piękne zabarwienie żółtozielone miał jeden z największych