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ROUGH WHITE TOPAZ BRAZIL
Rough White Topaz Brazil CODE: WTB01
can suplly untill 800 kilos per month of Rough White Topaz Brazil,
has great crystallization and some cleanness , with following sizes
Each 01 kilo of Rough white topaz brazil after sliced we can get + - 200 grams of stone clean in the following sizes:
0.1 - 1 gram - 35%
grams up- 10%
TOPAZ PHYSICAL PROPERTIES
TOPAZ BACKGROUND INFORMATION
These color causing 'color centers' can occur and be reversed by natural irradiation and heating processes, resulting in the variety of colors exhibited by natural color topazes, or they can be manipulated by artificial means. More than 99.9% of all blue topaz gems on the market today have undergone an irradiation treatment to produce their blue color.
Sky blue topaz gems are made from natural colorless topaz by passing electrons through the topaz (just like the electrons passing through the wiring of your home - known as electricity). The resulting sky blue color in the topaz is permanent throughout the gem and will never fade unless exposed to very high heat. In genuine sky blue topaz, there is no dangerous residual radiation in the topaz like there is with nuclear reactor irradiation - we have no nuclear reactor irradiated topaz, only sky blue topaz gems.
Some color centers in topaz are stable until heated hundreds of degrees while others are very unstable, fading within a few days merely by exposure to sunlight. The natural color of the yellow to 'sherry'-colored to brown topaz crystals from the Thomas Range in Utah, USA often exhibit this 'fast fading' phenomenon. Yellow to 'sherry'-colored to brown topaz crystals from some other locations do not fade when exposed to sunlight, indicating a light stable color center.
Much colorless topaz becomes a brownish-green color when irradiated. Subsequent exposure to light or heat will usually cause the brown portion of the color to fade leaving a blue color that is stable to light. Additional heating will cause this blue color to fade and the topaz will become colorless once again.
Some brown topazes that contain chromium impurities will become pink to violet upon heating. These colors are stable to light and this process can be reversed by subsequent irradition.
TOPAZ OCCURRENCE AND DIAGNOSTIC FEATURES
Topaz occurs in metamorphic rocks by fluorine metasomatism in greisens and quartzites associated with fluorite, zinnwaldite, corundum and rutile. It also occurs (rarely) in schists.
Topaz appears in hypothermal ore deposits associated with cassiterite, hematite, wolframite and gold.
Due to topaz's hardness, it is often found in eluvial and alluvial deposits.
Topaz is characterized by its high specific gravity, hardness, crystal habit and cleavage.
Return to the Index of Topaz Information Topics
Topaz was one of the stones in the 'Breastplate of Judgement' of Aaron, described in the bible (Exodus: xxviii, 15-30). In Vedic astrology ( 1000's of years older than western astrology, and still practiced by millions today), topaz is asigned to the planet jupiter. Historically, topaz has been thought to give long life, good looks and to improve intelligence. It is also thought to provide protection from poison, disease and sorcery.
Topaz is used as a gemstone. Its perfect cleavage makes it susceptible to being damaged if struck upon a hard surface.
The astrological sign of topaz is Sagittarius.
TOPAZ METAPHYSICAL PROPERTIES
In addition to the above metaphysical properties for topaz, Blue topaz is said to enhance one's communicative abilities, helping to more easily and clearly express oneself.
Topaz is a stone of strength.
Color: Pure topaz is colorless, but it also occurs
in a broad range of colors: yellow, blue, pink, peach, gold, green,
red, and brown.
Description: Topaz is an aluminum fluorite silicate
containing fluorine and has a chemical formula of Al2F2SiO4. It is one
of the few gem minerals which, under suitable conditions, grow into
Topaz typically occurs in cavities in rhyolites and granite, in pegmatite
dikes, and in high-temperature veins with cassiterite and tourmaline.
The name's origin: The name topaz is derived from the Indian Sanskrit word tapas, meaning fire. According to another theory topaz derives its name from the Island of Topazos, in the Red Sea, where the Romans obtained a stone which they called by this name, but which was the modern chrysolite or peridot.
Birthstone: Topaz along with citrine are birthstones of Scorpius (Scorpion): Oct. 24 - Nov. 21.
Wedding anniversary: Topaz is the anniversary
gemstone for the 4th and 19th year of marriage.
Varieties: Nothing compares to the sparkling brilliance of Blue Topaz. Orange-red Imperial Topaz is rare.
Care and treatment: As topaz has a hardness of 8, keep your gems in separate boxes to protect other jewelry from scratches. Also avoid large temperature changes. Topaz often becomes paler if kept out in the sun. Do not clean topaz in a home ultrasonic cleaner. The best way to clean topaz is warm soapy water.
From the stone history: It is believed that the
topaz of modern mineralogists was unknown to the ancients and that the
stone called topazos was the mineral chrysolite or peridot.
Shopping guide: Topaz looks beautiful in rings, bracelets, necklaces, and pendants. Blue Topaz is available in a variety of shades, sizes and shapes. Red and intense pink are the most rare and most desirable colors for topaz. Pure topaz when brilliant-cut sometimes is mistaken for diamond.
Healing ability: Topaz stimulates an endocrine system. It assists in general tissue regeneration. Topaz is valuable in the treatment of hemorrhages. It also increases poor appetite and helps fighting blood disorders.
Mystical power: Topaz balances emotions and calms passions. It releases tension and gives feelings of joy. Topaz is known as spiritual rejuvenation gemstone.
Deposits: Important sources of topaz are in Russia,
Siberia, Brazil, Sri Lanka, Africa and China, Japan, Pakistan, Myanmar,
Nigeria, Australia, Mexico, and in the United States (in Maine, New
Hampshire, California, Colorado, and Utah). In the United States the
best topaz has been worked near Pikes Peak, Colorado, and in San Diego
county, California. The largest known deposits are located in Minas
Gerais in Brazil.
The information for mineralogist: Topaz has a
hardness of 8.
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