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Bidding has ended on this item. Item:Clear Quartz Sphere Crystal Ball Marble Gemstone NR  |
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Report itemHi there. I am selling this A ++ High Grade Clear Quartz crystal ball! This little guy weighs 111.10 carats which is 22.22 grams and is 25 mm round and is very cute!. It is hand polished and hand carved from Brazil. I know that the quartz is from Brazil, but I think it was carved there as well. I think that phantoms are one of the most amazing geological formations in crystals. It is a record of where the crystal stopped growing for a little while as it waited some sort of impurities coated the surface, and then it grew some more, trapping those impurities in it. It shows us that even though we think we are through growing, If you have any questions, do not hesitate to ask me. Have fun bidding, and know that I will ship this out the same day as the payment clears. Thanks so much for visiting my auction and have a great day:>) 
The following is information about quartz crystal from wikipedia: ==================================================================================================================================== Quartz (from German Quarz (help·info)[1]) is the most abundant mineral in the Earth's continental crust (although feldspar is more common in the world as a whole). It is made up of a lattice of silica (SiO2) tetrahedra. Quartz has a hardness of 7 on the Mohs scale and a density of 2.65 g/cm³. Contents * 1 Crystal habit * 2 Varieties o 2.1 Synthetic and artificial treatments * 3 Occurrence * 4 Related silica minerals * 5 History * 6 Piezoelectricity * 7 See also * 8 Notes * 9 References Crystal habit Quartz belongs to the rhombohedral crystal system. The ideal crystal shape is a six-sided prism terminating with six-sided pyramids at each end. In nature quartz crystals are often twinned, distorted, or so intergrown with adjacent crystals of quartz or other minerals as to only show part of this shape, or to lack obvious crystal faces altogether and appear massive. Well-formed crystals typically form in a 'bed' that has unconstrained growth into a void, but because the crystals must be attached at the other end to a matrix, only one termination pyramid is present. A quartz geode is such a situation where the void is approximately spherical in shape, lined with a bed of crystals pointing inward. Varieties Pure quartz is colorless or white; colored varieties include rose quartz, amethyst, smoky quartz, milky quartz, and others. Quartz goes by an array of different names. The most important distinction between types of quartz is that of macrocrystalline (individual crystals visible to the unaided eye) and the microcrystalline or cryptocrystalline varieties (aggregates of crystals visible only under high magnification). Chalcedony is a generic term for cryptocrystalline quartz. The cryptocrystalline varieties are either translucent or mostly opaque, while the transparent varieties tend to be macrocrystalline. Although many of the varietal names historically arose from the color of the mineral, current scientific naming schemes refer primarily to the microstructure of the mineral. Color is a secondary identifier for the cryptocrystalline minerals, although it is a primary identifier for the macrocrystalline varieties. This does not always hold true. Major Varieties Chalcedony Any cryptocrystalline quartz, although generally only used for white or lightly colored material. Otherwise more specific names are used. Agate Multi-colored, banded chalcedony, semi-translucent to translucent Onyx Agate where the bands are straight, parallel and consistent in size. Jasper Opaque chalcedony, typically red to brown Aventurine Translucent chalcedony with small inclusions (usually mica) that shimmer. Tiger's eye Fibrous gold to red-brown coloured quartz, exhibiting chatoyancy. Rock crystal Clear, colorless Amethyst Purple, transparent Citrine Yellow to reddish orange to brown, greenish yellow Prasiolite Mint green, transparent Rose quartz Pink, translucent, may display diasterism Rutilated quartz Contains acicular (needles) inclusions of rutile Milk quartz White, translucent to opaque, may display diasterism Smoky quartz Brown to grey, opaque Morion Dark-brown, opaque Carnelian Reddish orange chalcedony, translucent Tiger's eye Rose quartz Milk quartz Rutilated quartz crystal Quartz sand from Coral Pink Sand Dunes State Park, Utah. These have a hematite coating which provides the orange color. Scale bar is 1.0 mm. Synthetic and artificial treatments A synthetic quartz crystal grown by the hydrothermal method, about 19 cm long and weights about 127 grams A synthetic quartz crystal grown by the hydrothermal method, about 19 cm long and weights about 127 grams Not all varieties of quartz are naturally occurring. Prasiolite, an olive colored material, is produced by heat treatment; natural prasiolite has also been observed in Lower Silesia in Poland. Although citrine occurs naturally, the majority is the result of heat-treated amethyst. Carnelian is widely heat-treated to deepen its color. Due to natural quartz being so often twinned, much of the quartz used in industry is synthesized. Large, flawless and untwinned crystals are produced in an autoclave via the hydrothermal process; emeralds are also synthesized in this fashion. While these are still commonly referred to as quartz, the correct term for this material is silicon dioxide. Occurrence Quartz occurs in hydrothermal veins and pegmatites. Well-formed crystals may reach several meters in length and weigh hundreds of kilograms. These veins may bear precious metals such as gold or silver, and form the quartz ores sought in mining. Erosion of pegmatites may reveal expansive pockets of crystals, known as "cathedrals." Quartz is a common constituent of granite, sandstone, limestone, and many other igneous, sedimentary, and metamorphic rocks. Related silica minerals Tridymite and cristobalite are high-temperature polymorphs of SiO2 that occur in high-silica volcanic rocks. Coesite is a denser polymorph of quartz found in some meteorite impact sites and in metamorphic rocks formed at pressures greater than those typical of the Earth's crust. Stishovite is a yet denser and higher-pressure polymorph of quartz found in some meteorite impact sites. Lechatelierite is an amorphous silica glass SiO2 which is formed by lightning strikes in quartz sand. History Quartz crystal showing transparency. Quartz crystal showing transparency. The name "quartz" comes from the German "Quarz", which is of Slavic origin (Czech miners called it křemen). Other sources insist the name is from the Saxon word "Querkluftertz", meaning cross-vein ore.[2] Quartz is the most common material identified as the mystical substance maban in Australian Aboriginal mythology. It is found regularly in passage tomb cemeteries in Europe in a burial context, eg. Newgrange or Carrowmore in the Republic of Ireland. The Irish word for quartz is grian cloch, which means 'stone of the sun'. Roman naturalist Pliny the Elder believed quartz to be water ice, permanently frozen after great lengths of time. (The word "crystal" comes from the Greek word for ice.) He supported this idea by saying that quartz is found near glaciers in the Alps, but not on volcanic mountains, and that large quartz crystals were fashioned into spheres to cool the hands. He also knew of the ability of quartz to split light into a spectrum. This idea persisted until at least the 1600s. In the 17th century, Nicolas Steno's study of quartz paved the way for modern crystallography. He discovered that no matter how distorted a quartz crystal, the long prism faces always made a perfect 60 degree angle. Charles Sawyer invented the commercial quartz crystal manufacturing process in Cleveland, Ohio, United States. This initiated the transition from mined and cut quartz for electrical appliances to manufactured quartz. Quartz's piezoelectric properties were discovered by Jacques and Pierre Curie in 1880. The quartz oscillator or resonator was first developed by Walter Guyton Cady in 1921 [1]. George Washington Pierce designed and patented quartz crystal oscillators in 1923 [2]. Warren Marrison created the first quartz oscillator clock based on the work of Cady and Pierce in 1927 [3]. Piezoelectricity Quartz crystals have piezoelectric properties, that is they develop an electric potential upon the application of mechanical stress. An early use of this property of quartz crystals was in phonograph pickups. One of the most common piezoelectric uses of quartz today is as a crystal oscillator. The quartz clock is a familiar device using the mineral. The resonant frequency of a quartz crystal oscillator is changed by mechanically loading it, and this principle is used for very accurate measurements of very small mass changes in the quartz crystal microbalance and in thin-film thickness monitors. ____________________________________________________________________________________________________________________________________________________________________ Here is some information about Phantom crystals ___________________________________________________________________________________________________________________________________________________________________ PHYSICAL PROPERTIES * Phantom quartz chemical composition: SiO2 * Class: tectosilicate * Crystal system: Hexagonal-R; 32 (trigonal-trapezohedral) * Crystal habit: Macroscopic crystals commonly occur as horizontally striated hexagonal prisms terminated by a combination of positive and negative rhombohedrons forming six sided pyramids. Prism faces and/or rhombohedral terminations may be lacking, poorly developed or predominant resulting in diverse possible crystal habits. Trigonal tapezohedral faces can occur in the upper right or left of alternating prism faces identifying right or left handed crystals, respectively. * Twinning: Dauphine twin with c the twin axis, Brazil twin with {1120} the twin plane, Japanese twin is rare with {1122} the twin plane. * Specific gravity: 2.65 * Index of refraction: 1.54-1.55 * Birefringence: maximum of 0.009 * Hardness: 7 * Color: phantoms are commonly green, milky white, or shades of orange, red, purple or brown * Luster: vitreous * Transparency: opaque to transparent * Cleavage: none * Fracture: conchoidal * Streak: white Return to the Index of Phantom Quartz Information Topics QUARTZ (Phantom Quartz) BACKGROUND INFORMATION Phantom quartz is a macrocrystalline variety of the mineral Quartz (SiO2). Quartz is the most abundant single mineral on earth. It makes up about 12% of the earth's crust, occurring in a wide variety of igneous, metamorphic and sedimentary rocks. Quartz varieties are commonly separated into two groups based on the size of the individual grains or crystals; macrocrystalline quartz in which individual crystals are distinguishable with the naked eye, and cryptocrystalline quartz in which the individual crystals are too small to be easily distinguishable under the light microscope. Some of the macrocrystalline quartz varieties are: Amethyst, Ametrine, Cat's-eye Quartz, Citrine, Phantom Quartz , Rock Crystal, Rose Quartz, Rutilated Quartz and Smoky Quartz. Blue Aventurine Quartz and Green Aventurine Quartz are actually quartzites (a rock, not a mineral) composed essentially of interlocking macrocrystalline quartz grains with disseminated grains of other color imparting minerals. The cryptocrystalline varieties of quartz may be separated into two types; fibrous and microgranular. Chalcedony is the general term applied to the fibrous cryptocrystalline varieties. Agate is an example of a fibrous cryptocystalline banded chalcedony variety of quartz. Carnelian, Chrysoprase and bloodstone are other chalcedony varieties. Chert is the general term applied to the granular cryptocrystalline varieties of quartz, of which flint and Jasper are examples. Return to the Index of Phantom Quartz Information Topics OCCURRENCE AND DIAGNOSTIC FEATURES Phantom quartz usually occurs in rock crystal, but is also found in smoky quartz, citrine and amethyst. Rock crystal is transparent and colorless quartz. It commonly occurs inside quartz veins where it crytallizes in rock cavities known as vugs or pockets. It also is common in vugs or pockets in pegmatite dikes. Rock crystal often occurs as secondary quartz crystals on cryptocrystalline quartz in cavities and vugs, and in geodes. Natural radiation from radioactive elements or adjacent radioactive rocks can cause rock crystal to assume a brown to gray color, known as smoky quartz. Minor iron impurities can cause rock crystal to be purple (amethyst) or yellowish-orange (citrine). Phantom quartz crystal shapes can sometimes be seen in the interior of quartz crystals, outlining an earlier stage of the crystal's formation. These phantoms are usually composed of other minerals such as chlorite, goethite or hematite or are composed of other varieties of quartz such as milky quartz, smoky quartz or even amethyst which form on most or all of the surfaces of the quartz crystal at a particular point in time during its growth, after which the quartz crystal resumes its crystallization enclosing the phantom crystal outline within itself. Phantom quartz is recognized by its characteristic phantom crystal within itself. It can be identified as quartz by its crystal habit, transparency, hardness, glassy luster, conchoidal fracture, occurance and general lack of cleavage. Return to the Index of Phantom Quartz Information Topics HISTORICAL INFORMATION AND USES Pliny wrote nearly 2000 years ago that quartz crystals formed from ice exposed to intense cold for long periods of time in dark clefts and caverns in the mountains. This general belief was popular in diverse cultures until the eighteenth century, when modern geology began to develope in Europe. Phantom quartz crystals have been referred to as ghost crystals, spectre crystals and shadow crystals. The name quartz comes from the Saxon word querklufterz which meant cross vein ore. Return to the Index of Phantom Quartz Information Topics METAPHYSICAL PROPERTIES Phantom quartz crystals are said to help one understand the various stages in life that we all evolve thru, and they are said to be an excellent tool for meditation and for remembrance of past lives. ____________________________________________________________________________________________________________________________________________________________________ And some information about Chlorite (this is the Green specks that are inside the crystal that cause the phantom: _____________________________________________________________________________________________________________________________________________________________________ The chlorites are a group of phyllosilicate minerals. Chlorites can be described by the following four endmembers based on their chemistry via substitution of the following four elements in the silicate lattice; Mg, Fe, Ni, and Mn. * Clinochlore: (Mg5Al)(AlSi3)O10(OH)8 * Chamosite: (Fe5Al)(AlSi3)O10(OH)8 * Nimite: (Ni5Al)(AlSi3)O10(OH)8 * Pennantite: (Mn,Al)6(Si,Al)4O10(OH)8 In addition zinc, lithium and calcium species are known. The great range in composition results in considerable variation in physical, optical, and X-ray properties. Similarly, the range of chemical composition allows chlorite group minerals to exist over a wide range of temperature and pressure conditions. For this reason chlorite minerals are ubiquitous minerals within low and medium temperature metamorphic rocks, some igneous rocks, hydrothermal rocks and deeply buried sediments. Contents [hide] * 1 Chlorite structure * 2 Occurrence * 3 Members of the Chlorite group: * 4 See also * 5 References [edit] Chlorite structure The typical general formula is: (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6. This formula emphasises the structure of the group. Chlorites have a 2:1 sandwich structure (2:1 sandwich layer = tetrahedral-octahedral-tetrahedral = t-o-t...), this is often referred to as a talc layer. Unlike other 2:1 clay minerals, a chlorite's interlayer space (the space between each 2:1 sandwich filled by a cation) is comprised of (Mg2+, Fe3+)(OH)6. This (Mg2+, Fe3+)(OH)6 unit is more commonly referred to as the brucite-like layer, due to its closer resemblance to the mineral brucite (Mg(OH)2). Therefore, chlorite's structure appears as follows: -t-o-t-brucite-t-o-t-brucite ... An older classification divided the chlorites into two subgroups: the orthochlorites and leptochlorites. The terms are seldom used and the ortho prefix is somewhat misleading as the chlorite crystal system is monoclinic and not orthorhombic. [edit] Occurrence Chlorite is commonly found in igneous rocks as an alteration product of mafic minerals such as pyroxene, amphibole, and biotite. Chlorite is a common mineral associated with hydrothermal ore deposits and commonly occurs with epidote, sericite, adularia and sulfide minerals. In this environment chlorite may be a retrograde metamorphic alteration mineral of existing ferromagnesian minerals, or it may be present as a metasomatism product via addition of Fe, Mg, or other compounds into the rock mass. Chlorite is also a common metamorphic mineral, usually indicative of low-grade metamorphism. It is the diagnostic species of the zeolite facies and of lower greenschist facies. It occurs in the quartz, albite, sericite, chlorite, garnet assemblage of pelitic schist. Within ultramafic rocks, metamorphism can also produce predominantly clinochlore chlorite in association with talc. Experiments indicate that chlorite can be stable in peridotite of the Earth's mantle above the ocean lithosphere carried down by subduction, and chlorite may even be present in the mantle volume from which island arc magmas are generated. [edit] Members of the Chlorite group: Baileychlore (Zn,Fe+2,Al,Mg)6(Al,Si)4O10(O,OH)8 Chamosite (Fe,Mg)5Al(Si3Al)O10(OH)8 Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8 Cookeite LiAl4(Si3Al)O10(OH)8 Donbassite Al2[Al2.33][Si3AlO10](OH)8 Gonyerite (Mn,Mg)5(Fe+3)2Si3O10(OH)8 Nimite (Ni,Mg,Al)6(Si,Al)4O10(OH)8 Odinite (Fe,Mg,Al,Fe,Ti,Mn)2.4(Al,Si)2O5OH4 Orthochamosite (Fe+2,Mg,Fe+3)5Al(Si3Al)O10(O,OH)8 Pennantite (Mn5Al)(Si3Al)O10(OH)8 Ripidolite (Mg,Fe,Al)6(Al,Si)4O10(OH)8 Sudoite Mg2(Al,Fe)3Si3AlO10(OH)8 Clinoclore, pennantite, and chamosite are the most common varieties. Several other sub-varieties have been described. The name chlorite is from the Greek chloros, meaning "green", in reference to its color.The chlorites are a group of phyllosilicate minerals. Chlorites can be described by the following four endmembers based on their chemistry via substitution of the following four elements in the silicate lattice; Mg, Fe, Ni, and Mn. * Clinochlore: (Mg5Al)(AlSi3)O10(OH)8 * Chamosite: (Fe5Al)(AlSi3)O10(OH)8 * Nimite: (Ni5Al)(AlSi3)O10(OH)8 * Pennantite: (Mn,Al)6(Si,Al)4O10(OH)8 In addition zinc, lithium and calcium species are known. The great range in composition results in considerable variation in physical, optical, and X-ray properties. Similarly, the range of chemical composition allows chlorite group minerals to exist over a wide range of temperature and pressure conditions. For this reason chlorite minerals are ubiquitous minerals within low and medium temperature metamorphic rocks, some igneous rocks, hydrothermal rocks and deeply buried sediments. Contents [hide] * 1 Chlorite structure * 2 Occurrence * 3 Members of the Chlorite group: * 4 See also * 5 References [edit] Chlorite structure The typical general formula is: (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6. This formula emphasises the structure of the group. Chlorites have a 2:1 sandwich structure (2:1 sandwich layer = tetrahedral-octahedral-tetrahedral = t-o-t...), this is often referred to as a talc layer. Unlike other 2:1 clay minerals, a chlorite's interlayer space (the space between each 2:1 sandwich filled by a cation) is comprised of (Mg2+, Fe3+)(OH)6. This (Mg2+, Fe3+)(OH)6 unit is more commonly referred to as the brucite-like layer, due to its closer resemblance to the mineral brucite (Mg(OH)2). Therefore, chlorite's structure appears as follows: -t-o-t-brucite-t-o-t-brucite ... An older classification divided the chlorites into two subgroups: the orthochlorites and leptochlorites. The terms are seldom used and the ortho prefix is somewhat misleading as the chlorite crystal system is monoclinic and not orthorhombic. [edit] Occurrence Chlorite is commonly found in igneous rocks as an alteration product of mafic minerals such as pyroxene, amphibole, and biotite. Chlorite is a common mineral associated with hydrothermal ore deposits and commonly occurs with epidote, sericite, adularia and sulfide minerals. In this environment chlorite may be a retrograde metamorphic alteration mineral of existing ferromagnesian minerals, or it may be present as a metasomatism product via addition of Fe, Mg, or other compounds into the rock mass. Chlorite is also a common metamorphic mineral, usually indicative of low-grade metamorphism. It is the diagnostic species of the zeolite facies and of lower greenschist facies. It occurs in the quartz, albite, sericite, chlorite, garnet assemblage of pelitic schist. Within ultramafic rocks, metamorphism can also produce predominantly clinochlore chlorite in association with talc. Experiments indicate that chlorite can be stable in peridotite of the Earth's mantle above the ocean lithosphere carried down by subduction, and chlorite may even be present in the mantle volume from which island arc magmas are generated. [edit] Members of the Chlorite group: Baileychlore (Zn,Fe+2,Al,Mg)6(Al,Si)4O10(O,OH)8 Chamosite (Fe,Mg)5Al(Si3Al)O10(OH)8 Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8 Cookeite LiAl4(Si3Al)O10(OH)8 Donbassite Al2[Al2.33][Si3AlO10](OH)8 Gonyerite (Mn,Mg)5(Fe+3)2Si3O10(OH)8 Nimite (Ni,Mg,Al)6(Si,Al)4O10(OH)8 Odinite (Fe,Mg,Al,Fe,Ti,Mn)2.4(Al,Si)2O5OH4 Orthochamosite (Fe+2,Mg,Fe+3)5Al(Si3Al)O10(O,OH)8 Pennantite (Mn5Al)(Si3Al)O10(OH)8 Ripidolite (Mg,Fe,Al)6(Al,Si)4O10(OH)8 Sudoite Mg2(Al,Fe)3Si3AlO10(OH)8 Clinoclore, pennantite, and chamosite are the most common varieties. Several other sub-varieties have been described. The name chlorite is from the Greek chloros, meaning "green", in reference to its color. Due to the rising cost of living and shipping items, and the rising cost of ebay fees and paypal fees, and the loss of income in my life, I can not offer free shipping on any items that actually end up with a closing bid of less than 5.00. If this auction actually closes below 5.00, I will have to add a 2.00 small order fee. Please understand that I have to do this as offering free shipping to an item that closes for 2.00 would in turn be paying you to take an item from me, and defeat the purpose of liquidating my assets to pay off my medical bills.Thank you for understanding. |
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