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Tuesday, February 7, 2012

Information About Gemstones - Chrysoprase, Citrine, Cordierite.


Chrysoprase
The chrysoprase is a gem variety of chalcedony, but which contains nickel. It is usually pale green, but can also be dark green. It is made of crystals so small that you can not see under the microscope. This feature differentiates the amethyst, citrine, and other forms of quartz, which are more or less transparent and form hexagonal crystals. That's the color it is sought not for its forms. Because of the shortage of chrysoprase, and its pleasant green color, chrysoprase is a very popular type of quartz. The purest gems are comparable to jade, with which it is sometimes confused. Cut into cabochons is also sought as amethyst.
Use: invisibility.

Citrine
Citrine is a variety of quartz; the yellow color is due to the presence of trace amounts of iron oxides in the mineral. It is also called yellow quartz. It is relatively rare in nature. Most often it is heated amethyst takes a yellow instead of purple.

Cordierite
Cordie rite is more difficult to recognize from the beryl, especially on surfaces unaltered, as it can be confused with quartz. Surfaces altered, cordierite is transformed into micro crystalline aggregates of chlorate and serest, sometimes called pinite, which look "rusty". Cordie rite appears in the clay sediments undergoing thermal metamorphism. Cordie rite can also be found in some igneous rocks.

Monday, February 6, 2012

Information About Gemstones - Corundum, Cornelia, Diamondn


Corundum
Some varieties of corundum are natural gemstones. The ruby and sapphire are the varieties most commonly used in jewelry. Emery variety of this stone is a ceramic widely used, mainly as an abrasive because of its hardness, and as refractory. Corundum is the second hardest natural mineral after diamond. Corundum is used in some sharpening stones, but also in all kinds of wheels.

Cornelian
The Carnelian is a variety of quartz red to red-brown in the group of red chalcedony. It is mainly used for jewelry. When buying carnelian, we must be vigilant because most stones are actually proposed tinted agates. The Carnelian is a stone of solid color, while the colored agates presented often have multi-colored lines.

Diamond
Diamond is a mineral composed of carbon. This is the hardest of all natural materials. They form when it is under conditions of temperature and pressure very high, corresponding to depths of about 180 km in the mantle. Ten tons of ore can be extracted only one carat diamond. In general, square kilometers of land is excavated for a size able rock, hence the cost of diamonds. The beauty of his brilliant is because it has a high refractive index of light and a large dispersive power. But all diamonds are not used in jewelry. Any failure can deprive them of the value and they are then used to craft applications. Because of its extreme hardness, diamonds can be machined only by another diamond, so the sculpture and the polish of the stone are the most important elements. There are many ways to cut the diamond, but one that is best in the beauty of the diamond is certainly the size "brilliant" that turns rough stones into gems of light, showing 58 facets.
Use: invulnerability to undead.

Sunday, February 5, 2012

Information About Gemstones - Emerald, Garnet, Hematite


Emerald
Emerald is one of the most expensive gems. In jewelry, mainly on the size of "Emerald" (rectangle with cut sides), to "cap" in "pear" or "oval". The widespread presence of inclusions, gracefully called "frosted" or poetically "garden" is not a handicap, because it can certify the origin of the stone, some crystallographic peculiarities are highly sought by collectors (star six branches, called Tranche emerald). Most emeralds are treated with oils or resins because they are very fragile.
The emerald, in general, also symbolizes true love and sincere and it is the stone of knowledge.
Use: improves vision, treats blindness and myopia, protects against snake bites. It is sometimes called "stone of chastity," which is disturbed in case of infidelity.

Garnet
The garnets are used as gemstones in jewelry for thousands of years. In those ancient times, they were known under the name of carbuncle or gem. Historically, the garnets are supposed to protect the injury and poison, stop bleeding, a symbol of truth and loyalty, and bring prosperity. Due to the significant number of different chemical elements that constitute them, garnets show a wide range of colors ranging from yellow to red through green and black, only the blue color is not represented.

Hematite
Etymologically derived from the word "blood", hematite is a mineral very common, black to silvery gray, brown to red, or red. If it is powdered, hematite, whatever its variety, gives red flashes. Hematite powder was also used as a red pigment. Hematite usually forms by the erosive action of water.
Use: Helps Warriors and heals wounds

Saturday, February 4, 2012

Information About Gemstones - Jade, Jasper, Lapis lazuli


Jade
Jade is a very hard gemstone-green more or less pronounced. The different varieties of jade were very used to the time of the polished stone for making axes. In the symbolic Oriental jade was a stone on the Emperor, the symbol of absolute power. In addition, they placed in the mouth of the deceased a cicada jade, a symbol of eternal life and resurrection. Always in the East, jade is considered to be the seed of the dragon.
Use: gift for music and instruments.


Jasper
Jasper is a sedimentary rock is often classified with microcrystalline quartz. Jasper can have several aspects: spotted, ribbon, red (or Eastern), to red spots on a green background, black, etc.. and several varieties: The radiologists, red violet, the Lydian, rock close to the radiologists but gray or black due to the presence of carbonaceous materials, the aphanites more clay and gray or black. Jasper is often used to make cuts and also articles for the decoration of the facades.
Application: protection against venom.


Lapis lazuli
Lapis lazuli is a metamorphic rock that is often found in limestone. She is best known as an ornamental stone, opaque, blue, between the blue and ultramarine. The value lapis have a deep blue color, dotted with bursts of yellow pyrite. If they are too numerous, or if the rock contains veins of white calcite, then it loses its value. Lapis can be perfectly polite and it is widely used in jewelry. It is also used to make mosaics, sculptures and ornaments. Ground, it can serve as a blue pigment (overseas) for painting. Spinel, other ornamental stone, was sometimes sold for lapis and can also be confused with the sapphire.
Use: The lapis has a reputation as an aphrodisiac but you can assign other medicinal properties: good for the robustness of the members, and preventing the spirit of fear, doubt and envy. It is drunk crushed, mixed with milk.

Friday, February 3, 2012

Information About Gemstones - Malachite, Morion, Obsidian.


Malachite
This stone is a deep green color and vibrant, almost always micro crystalline. When formed by oxidation of copper in air, it takes the name of green-gray. It can also be orange-red. Malachite is used as a mineral pigment shades to make some blue-green light and bright. The pigment is sensitive to light and acid and tends to turn color. Malachite is used as an ornamental stone for columns, tables, jewelry, etc..
Use: antioxidant protective action of cells, detoxifying effect, protection against falls, spells and evil spirits.


Morion
The morion is a variety of quartz very dark almost black color centers which contain iron irradiated naturally.


Obsidian
Gray, dark green, red or black, it comes from an acid wash. Obsidian is transparent to translucent and has a texture and a vitreous luster. Obsidian is formed from lava flows very thick and rich in silica. Roche unusual, it is used for the manufacture of edged sword for weapons and tools. The pebbles used in the manufacture of jewelry.

Thursday, February 2, 2012

Information About - Onyx, Opal, Peridot


Onyx
Onyx is a variety of chalcedony. The sardonic is a variant of onyx in which the colored bands are sard color (the sardine is a reddish brown variety of chalcedony) rather than black.
Use: causes discord among enemies.

Opal
The opal, transparent to translucent, is a form of hydrated silica. The amount of water in the opal varied density. Some varieties of opal are not compact and the introduction of pigments that change their base color. The pure mineral is transparent or milky, the base color varies from yellow to brown, through orange and even red, but the colored lights of opal are due to the play of light caused by the stratification that cause interference and give the pearly luster. Glare white, blue, gray and black (so rare stones are more expensive) are quite common and red highlights are very rare. The opal has different varieties, some of which are used in jewelry and classified as gemstones; these varieties are distinguished by their origin, background color or nature. Opal is a hydrated mineral; it is advisable to keep her jewelry in cotton damp. This will avoid losing water, and therefore its brilliance.
Use: good luck, healing in close contact with the eye.

Peridot
Peri dot, yellowish-green or olive green, is the name given to the olivine when used as a gemstone in jewelry.
Use: immunity against enchantments.

Wednesday, February 1, 2012

Information About - Pearl, Moonstone, Quartz


Pearl
The beads are small beads, usually white, created by certain mollusks, primarily oysters. When an object passes irritant inside the shell, the animal reacts by surrounding the object with a layer of calcium carbonate. This mixture is called nacre. The pearl has now rependu and pearls are rarely found in the wild. The aesthetic quality of the pearl depends on the thickness of the shell but also the regularity of crystallization. The beads are used to make jewelry. They owe their iridescent sheen (close to the rainbow in the sky) to the reflection and refraction of translucent layers of nacre. The brightness is particularly fine as the layers are thinner and numerous. Pearls are often white, sometimes tinged with cream or pink, but may be tinted yellow, green, blue, brown or black. Black pearls are very expensive because it is very rare.
  
Moonstone
The Moonstone is an opalescent variety of orthoclase, quite sensitive to shocks, which evokes the moonlight. If the layers are thin enough, they give a nice blue. A reflection in one band can provide a moonstone-eye cat. The large stones of good quality are rare and expensive. The yellow orthoclase is a particular variety of orthoclase champagne color. Is fragile, it is size emerald cut for collectors.
Use: causes lycanthropy.
  
Quartz
It comes either in the form of large colorless crystals, colored or smoked, either in the form of microscopic crystals of translucent appearance. Quartz is known since time immemorial: the patricians are using rock crystal balls to cool their hands in summer: the quartz is indeed an excellent thermal conductor. It is also used for water treatment but also Litho therapy (stress, fatigue, anxiety). In nature, quartz is rarely in the form of single crystals of sufficient quality. The crystals can also contain inclusions, liquid, gaseous or solid. Since it is very common and hard, quartz can be used, like the flint to start a fire the spark produced by the percussion of a steel blade, used to ignite combustible materials such tinder.
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