Class: Oxides and hydroxides.
Formula: Al2BeO4, complex oxides of beryllium and aluminum.
Hardness: 8.5.
Specific gravity: 3,7-3,72.
Color: greenish, bluish, reddish.
Feature: white.
Related Minerals: synthetic spinel and corundum alexandrite
One of the views of this stone is truly Russian "Alexander - Stone of widows." However, as believe it can harm only if wearing one stone. Bad quality alexandrite disappear, if you wear two, or even better three or four stones. Perhaps the reason for the emergence of this belief was the assassination of Alexander II? Indeed, in Russia, this stone tied to his name. Alexandrite is named in honor of Alexander II in connection with what was first discovered in the Urals, 100 km from Ekaterinburg, April 17, 1834 on the day of maturity of the emperor.
Only indigenous mine alexandrite are "emerald mines of the Urals" in Russia, where the development of alexandrite are not officially in 1995, in connection with the termination of work on Malyshevskoye field. Along with Russia, an important supplier to world markets alexandrite colored gemstones is Sri Lanka, where the alexandrite found in gravel deposits with another kind of chrysoberyl - "cat's eye."
Alexandrite deposit in Brazil was discovered in the mid 80s. the last century in the state of Minas Gerais in the Hematita, which during the three months from April to June 1987 was almost completely worked out.
Later discoveries were alexandrite sporadic.
The number of new supplier countries of alexandrite in the world market include Tanzania and Madagascar. Here alexandrite are found in areas of mining rubies and sapphires. In general, alexandrite African deposits are characterized by low-contrast color changes.
The main advantage of alexandrite - the ability to change color when you change the nature of light. This optical effect due to the fact that chromium in alexandrite is in a condition that causes not only stain the stone, but its change during the transition from daylight to electric lighting.
In daylight color Ural stones ranges from bluish-green to yellowish green, with electric - from the gray-purple, gray-pink to purple and reddish purple.
Brazilian and African stones are usually in daylight brownish-green, not at all resemble the color of emerald, as opposed to the Urals. But when the electric light, they tend to be more red than the Urals, but the contrast color transition they are usually not so great.
Products
Alexandrite jewelry is almost always made only on order. The cost of alexandrite varies from 5000 to 37 000 $ per carat. In this case, the price depends on them alexandrite color, clarity and weight. Note that the natural alexandrite - a very small rock-cut and paste is rarely more than 1 carat in weight ... It is also noteworthy that most of the gold jewelry alexandrite, made at the turn of the eighteenth and nineteenth centuries, was melted. In this sense, any antique jewelry alexandrite are extremely rare. The cost of such items is often determined by only the last digit of the auction struggle collectors. The most common cut for alexandrite - a step or drop-shaped diamond. "Cat's Eye" is treated as a cabochon.
The largest Druze of crystals of alexandrite weighing around 5 kg (25x15 cm) is in the Mineralogical Museum of the Moscow them. Fersman, and the largest faceted alexandrite weighing 66 carats, is stored in the United States, in the famous Smithsonian Institution (Washington).
Today alexandrite valued very highly, second only to diamond, ruby, emerald and sapphire. Even a small pendant with a modest natural stone can be measured in hundreds of U.S. dollars.
Medicinal properties
Alexandrite has a beneficial effect on the nervous system as a whole. Helps to eliminate neurological problems at the cellular level.
Helps the spleen, pancreas and male reproductive organs.
Alexandrite promotes better assimilation of protein foods, has a powerful cleansing effect and improves liver function.
Relieves tension of the neck muscles.
Talismans and Amulets
According to legend, the appearance of yellow color in the color of the stone warn its owner of danger or illness. That's why alexandrite is sometimes called "prophetic Russian stone." It is believed that alexandrite jewelry to contribute to the spiritual renewal of the owner, balancing the mind and emotions.
Compliance with the sign of the Zodiac
Scorpio
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