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Encyclopedia > Tiger's Eye
Polished tiger's eye gemstone
Polished tiger's eye gemstone

Tiger's eye (also Tigers eye, Tiger eye) is a chatoyant gemstone that is usually yellow- to red-brown, with a silky luster. It is a fibrous silicified crocidolite (blue asbestos), a classic example of pseudomorphous replacement. An incompletely silicified blue variant is called Hawk's eye. A member of the quartz group, its physical and optical properties are identical or very near to those of single-crystal quartz. Tigers eye cabochon gem. ... Tigers eye cabochon gem. ... Image File history File linksMetadata Tigers-Eye2. ... Image File history File linksMetadata Tigers-Eye2. ... Tiger eye In gemology, chatoyancy (or chatoyance) is an optical reflectance effect seen in certain gemstones. ... A selection of gemstone pebbles made by tumbling rough rock with abrasive grit, in a rotating drum. ... For the file system called Lustre, see Lustre (file system) Lustre (American English: luster) is a description of the way light interacts with the surface of a crystal, rock or mineral. ... The chemical compound silicon dioxide, also known as silica, is the oxide of silicon, chemical formula SiO2. ... Amphibole (Hornblende) Amphibole defines an important group of dark-colored rock-forming inosilicate minerals composed of double chain SiO4 tetrahedra linked at the vertices and generally containing ions of iron and/ or magnesium in their structures. ... In geology, a pseudomorph is a mineral compound resulting from a substitution process in which the appearance and dimensions remain constant, but the mineral which makes up the chief component of the compound is replaced by another. ... Quartz (from German Quarz[1]) is the second most common mineral in the Earths continental crust. ...


The gems are usually cut en cabochon in order to best display their chatoyancy. Red stones are brought about through gentle heat treatment. Honey-coloured stones have been used to imitate the much higher valued cat's eye chrysoberyl (cymophane), but the overall effect is unconvincing. Artificial fibreoptic glass is a common imitation of tiger's eye, and is produced in a wide range of colours. A cabochon or cabouchon is a gemstone which has been shaped and polished as opposed to facetted. ... The mineral or gemstone chrysoberyl, not to be confused with beryl, is an aluminate of beryllium with the formula BeAl2O4. ... Optical fibers An optical fiber (or fibre) is a glass or plastic fiber designed to guide light along its length by confining as much light as possible in a propagating form. ...

Tiger iron

Tiger iron is an altered rock composed chiefly of tiger's eye, red jasper and black hematite. The undulating, contrasting bands of colour and luster make for an attractive motif, and it is mainly used for jewelry-making and ornamentation. Tiger iron is a popular ornamental material used in a variety of applications, from beads and cabochons to knife hilts. Along with tiger's eye it is mined primarily in South Africa and Western Australia. Tiger's eye is primarily composed of silicon dioxide (SiO2) and the specific gravity ranges from 2.64 -2.71.[1] Formed by the alteration of crocidolite and consists essentially of quartz colored by iron oxide. Origin: South Africa Slab of tiger iron, a rock composed of tigers eye, jasper and hematite. ... Slab of tiger iron, a rock composed of tigers eye, jasper and hematite. ... This balancing rock, Steamboat Rock stands in Garden of the Gods park in Colorado Springs, CO The rocky side of a mountain creek near Orosí, Costa Rica. ... Polished jasper pebble, one inch (2. ... Hematite, also spelled haematite, is the mineral form of Iron(III) oxide, (Fe2O3), one of several iron oxides. ... A knife is a sharp-edged (single or double edged) instrument consisting of a thin blade used for cutting and fitted with a handle. ... See also: Hilt (band) and Peter Hilt Hilt of Szczerbiec The hilt of a sword is its handle, consisting of a guard, grip and pommel. ... Slogan or Nickname: Wildflower State or the Golden State Other Australian states and territories Capital Perth Government Constitutional monarchy Governor Ken Michael Premier Alan Carpenter (ALP) Federal representation  - House seats 15  - Senate seats 12 Gross State Product (2004-05)  - Product ($m)  $100,900 (4th)  - Product per capita  $50,355/person... R-phrases R42 R43 R49 S-phrases S22 S36 S37 S45 S53 Flash point non-flammable Supplementary data page Structure and properties n, εr, etc. ... Relative density (also known as specific gravity) is a measure of the density of a material. ...


Notable sources of tiger's eye include the USA, South Africa, Canada, China, Brazil, Namibia, India and Burma.


References

  1. ^ http://ist-socrates.berkeley.edu/~eps2/wisc/sg.html Berkeley.edu
  • GSA Comment and Reply on formation of Tiger's and Hawk's Eye

alsi Look up gem in Wiktionary, the free dictionary. ... Quartz crystal Synthetic bismuth hopper crystal Insulin crystals Gallium, a metal that easily forms large single crystals A huge monocrystal of potassium dihydrogen phosphate grown from solution by Saint-Gobain for the megajoule laser of CEA. In chemistry and mineralogy, a crystal is a solid in which the constituent atoms... Aquamarine (Lat. ... This article or section does not cite its references or sources. ... Polished jasper pebble, one inch (2. ... A block of lapis lazuli Lapis lazuli is one of the oldest of all gems, with a history of use stretching back 7,000 years. ... Freshadama grade cultured freshwater pearls. ... Peridot (pronounced pear-uh-dot or pear-uh-doe, IPA: /pɛɹɪdɑːt/ or Fr. ... Ruby is a red gemstone. ... Sunstone, a feldspar exhibiting in certain directions a brilliant spangled appearance, which has led to its use as an ornamental stone. ... Agate is a type of quartz (silica), chiefly chalcedony, characterised by its fineness of grain and brightness of color. ... Amethyst is a purple variety of quartz often used as an ornament. ... Chalcedony knife, AD 1000-1200 Bloodstone redirects here. ... This article is about the gemstone. ... This article is about the mineral Pyrite or Fools Gold. ... Quartz (from German Quarz[1]) is the second most common mineral in the Earths continental crust. ... Rhodochrosite from Sweet Home Mine, Alma, Colorado, USA Pink is the most common color of Rhodochrosite. ... Sapphire (from Hebrew: ספיר Sapir) is the single-crystal form of aluminium oxide (Al2O3), a mineral known as corundum. ... Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2. ... The tourmaline mineral group is chemically one of the most complicated groups of silicate minerals. ...


  Results from FactBites:
 
Encyclopedia of Gemstones - Tiger's-eye (287 words)
The name's origin: Tiger eye with its bands resembles an eye of tiger, so it is received its name due to this similarity.
Varieties: Hawk's-eye is similar to tiger eye, except that the crocidolite was replaced by quartz before altering to iron oxide.
Tiger Eye was thought to be all seeing due to its appearance.
Wholesale tumbled tigers eye gemstones from TOPROCK GEMSTONES and MINERALS (578 words)
Tigers eye is a gemstone that is fibrous in structure and predominantly fl in colour.
Tigers eye is a member of the silicate group of minerals and crystals.
The colouring in tigers eye derives from addition of iron from the crocidolite to the oxygen that is already present in the basic quartz structure of tigers eye.
  More results at FactBites »

 
 

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