CHRYSOPRASE
Characteristics of the mineral.
Refers to a group of translucent chalcedony green (from blue-green to emerald green and apple-green, silicon oxide). The more the mineral shines through and the thicker its green color, the more expensive it is. More transparent and green chrysoprase has a jeweler quality. A dense green translucent cut chrysoprase can even be confused with an emerald. Chrysoprase is the most valuable variety of translucent quartz - chalcedony. The green color of chrysoprase is determined by the compounds of nickel. In bright light the color of chrysoprase can fade. To restore the original color of the stone, it is recommended to wrap it for a while with a wet cloth (and even better to wear it, hold it in your hand). Chrysoprase is quite popular both earlier, and today is a jewel stone that is inserted into gold and silver or worn alone. This is one of the most expensive varieties of chalcedony, widely used in factory and artisanal jewelry.
The green color of chrysoprase depends on the presence of fine-dispersed inclusions of Ni-saponite (pimelite), garnierite, bunsenite and other nickel-containing minerals and gel-Ni (OH) 2, which is found in chrysoprase, as electron microscopic studies have shown, between isometric grains of size 0 , 5-50 μm. The deposits of chrysoprase are associated with the linear weathering crusts of nickel-bearing hyperbasites. Chrysoprases in nature are rare. The color of the stone, as a rule, is heterogeneous - from very weak to deep green with all the subtle transitions between them.
Chrysoprase should rightfully take its place in the calendar of stones. He is the closest relative of agate and carnelian, and each of them is a kind of chalcedony. However, every stone lover knows agate and carnelian, and chrysoprase is not so widely known. Jewelry and ornamental stone, known even in ancient Greece and ancient Rome, especially loved in the XVIII century. In jewelry, he was the central stone, along the edges framed with diamonds. Valued quite expensive. Chrysoprase is usually bright and clean, it can be both light and dark, but in its shade there is almost always a share of blueness. The green color of chrysoprase depends on the presence of fine-dispersed inclusions of Ni-saponite (pimelite), garnierite, bunsenite and other nickel-containing minerals and gel-Ni (OH) 2, which is found in chrysoprase, as electron microscopic studies have shown, between isometric grains of size 0 , 5-50 μm. The deposits of chrysoprase are associated with the linear weathering crusts of nickel-bearing hyperbasites.
Chrysoprase is the most valuable variety of chalcedony of beautiful onion, herbaceous, apple-green color. The color of the stone, as a rule, is heterogeneous - from very weak to deep green with all the subtle transitions between them. The color may fade from prolonged exposure to sunlight, but it is restored if the stone is placed in a moist environment. A gentle color, beautiful shine and fine polishing made him one of the jewels' favorite stones. Chrysoprase deposits are located in the CIS (Sarykul-Boldy, Novo-Akkermanovskoye), Brazil, USA (Arizona, Oregon, California). The main supplier to the world market of high-quality chrysoprases is Australia. The variety depends on the color of the stone and its size. The best stones are pieces of chrysoprase weighing up to 400 g.
Green coloration can be achieved by staining chalcedony and agate. In Zimbabwe, chalcedony was found onions, herbs, apple-green, caused by inclusions of chromium-bearing minerals. This is not chrysoprase. It is brighter, partially or completely transparent. It was called, in contrast to chrysoprase, in place of finding metolite. Sold much more widely and is significantly cheaper than chrysoprase.
Magic properties of stones.
Previously it was considered a symbol of success. Stone of inventors and innovators. Chrysoprase is favorable for any new business, tk. There is a desire for transformation. Therefore, people, a restless spirit, striving for renewal, it will bring good luck. A talisman of innovations, people, going unconventional way, striving for discoveries. He is also the guardian of businessmen, bankers, people of similar professions. Its green color improves mood.
Chrysoprase is known from ancient times as a stone that removes envy, slander, "evil" eyes, which removes spoilage, which does not allow spoiling and other mucks. Chrysoprase does not like suspicious, unbalanced, spiteful and deceitful, egocentric people, refusing to work for such. Nothing will call in that case a stone "to order." Chrysoprase is a great stubborn and helps only people of honor and valor. Such he surrounds friends and in every way protects from harm, even if the owner takes relatively risky steps (excessive risk does not endure). Chrysoprase is favorable for any new business, because it has a desire for transformation. Therefore, people, a restless spirit, striving for renewal, it will bring good luck. He attracts associates to the one who took up the new business. Therefore it is useful, before going to negotiations about a new project, to wear chrysoprase in silver.
Muttering chrysoprase warns the owner of the impending danger. Chrysoprase was considered a stone, driving away nightmares. Today it is used as a shield against negative energy. It is a remedy for evil eye, envy and slander, it gives endurance. It is considered to be the best talisman for business people, who have to deal with big sums of money every day. It gives calmness and discretion. He does not like lying people and gets dark before their eyes. Chrysoprase was worn like an amulet from a bad eye, slander, envious. It was believed that he gives endurance and courage.
Fake chrysoprase, rose quartz and others
CETSET. I want to pay special attention to the photo on the right. Today, synthetic imitations of bright green or yellowish color from composite material appeared on the market, issued for different natural stones (chrysoberyl, pink quartz, chrysoprase and others). Its production was presumably established in China on the basis of a special optical glass with coloring additives. The technology was developed in the USA. It is made of rare-earth silicates, compressed in the form of a mass of narrow parallel fibers, having a diameter in diameter from 6 to 10 microns. They are fused with a colored matrix with lower refractive indices of light. The material is called ketsite ("cat's eye area"). Small samples can shine through, large opaque. One cubic centimeter of the material contains fibers, the total length of which exceeds 8 kilometers !! It is a by-product of the development and development of modern fiber-optic technologies. If you purchase such beautiful colored beads with micro-canals and a specific iris for 5-20 dollars. (As though they were not called), you will not lose - this is the real and real price of an extremely curious man-made material. By the way, abroad this material is much more expensive than in Ukraine, but still at a price not comparable to chrysoberyl. Theoretically, colors such as green, honey-yellow, blue, pinkish, white are possible.
Poisonous and radioactive dangerous stones and minerals
** - poisonous stones and minerals (mandatory check in the chemical laboratory + explicit indication of toxicity).
** - radioactive stones and minerals (mandatory check on the standard dosimeter + ban on open sales in the case of radioactivity over 24 milli / g / h + additional measures of population protection).
All rare stones are subject to mandatory inspection at the standard dosimeter for the permissible level of radiation and in the chemical laboratory for the absence of poisonous and evaporating components that are dangerous to humans and the environment.
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