4mm Apatite Roundale Faceted gemstone Beads loose Semiprecious bead Buy Online Wholesale 16 inch lon
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You are here home Gemstone Jewelry   Semi Precious Stones   Faceted Beads 4mm Apatite Roundale
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4mm Apatite Roundale
Product Name : 4mm Apatite Roundale
Product Code : GSB S 105
Price : $ 55.00
Quantity :
  
 
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4mm Apatite Roundale Faceted Beads Features: 

ABOUT 4mm Sandstone Plain Beads: -
 
Beads Size: 4mm
Shape: Bead (round in shape with a small hole in the center)
No of beads: 200 - 240 beads on a string
Type: Faceted Beads
Length: 16 inches long
Color: Sea Blue
 
What is Apatite?
 
Apatite is a group of phosphate minerals, usually referring to hydroxylapatite, fluorapatite, and chlorapatite, named for high concentrations of OH−, F−, or Cl− ions, respectively, in the crystal. The formula of the admixture of the three most common endmembers is written as Ca5(PO4)3(OH, F, Cl), and the formulae of the individual minerals are written as Ca5(PO4)3(OH), Ca5(PO4)3F and Ca5(PO4)3Cl, respectively. Apatite is one of few minerals that are produced and used by biological micro-environmental systems. Apatite has a Moh's Scale hardness of 5. Hydroxylapatite is the major component of tooth enamel. A relatively rare form of apatite in which most of the OH groups are absent and containing many carbonate and acid phosphate substitutions is a large component of bone material.
 
Fluorapatite (or fluoroapatite) is more resistant to acid attack than is hydroxyapatite. For this reason, toothpaste typically contain a source of fluoride anions (e.g. sodium fluoride, sodium monofluorophosphate). Similarly, fluoridated water allows exchange in the teeth of fluoride ions for hydroxyl groups in apatite. Too much fluoride results in dental fluorosis and/or skeletal fluorosis. In the United States, apatite is often used to fertilize tobacco. It partially starves the plant of nitrogen, which gives American cigarettes a different taste from those of other countries. Fission tracks in apatite are commonly used to determine the thermal history of orogenic (mountain) belts and of sediments in sedimentary basins. (U-Th)/He dating of apatite is also well-established for use in determining thermal histories and other, less typical applications such as paleo-wildfire dating. Phosphorite is a phosphate-rich sedimentary rock, that contains between 18% and 40% P2O5. The apatite in phosphorite is present as cryptocrystalline masses referred to as collophane.
 
Uses
 
Fluoro-Chloro Apatite forms the basis of the, now obsolete, Halophosphor fluorescent tube phosphor system. Dopant elements of Manganese and Antimony, at less than one mole-percent, in place of the Calcium and Phosphorus impart the fluorescence, and adjustment of the Fluorine to Chlorine ratio adjusts the shade of white produced. Now almost entirely replaced by the Tri-Phosphor system.
 
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About Apatite:

Apatite is a relatively unknown gemstone that is found in Mexico, Ontario, Germany, Russia and Madagascar. The most notable colors are blue, blue/green, green and yellow. As gemstones go, it is one of the softer stones, being 5 on the mohs scale. The most popular color is "neon" blue. 
 
Apatite is a naturally occurring gemstone. It is basically known for its asparagus green color but it is found in wide range of colors, from colorless to pink, yellow, blue to violet. The best apatite is neon greenish blue with a clean clarity. The cost of the stone increases with the intensity of the color.
 
Apatite's property is fairly soft and is rarely used for rings, but is very popular as earrings and pendants because of its unusual intense green color. The hardness of the stone is 5 to 6.5 on Moh's scale. It has a vitreous luster and is sensitive to acids.
 
The name, 'apatite' has been taken from a Greek word 'apate,' which mean to deceive. It is so named because one can be easily get confused with variety of other stones like tourmaline, peridot and beryl.
 
Apatite is found in Burma, Brazil, India, Madagascar, Kenya, Mexico, Norway, Sri Lanka, South Africa, and the United States.
 
Apatite is found in all igneous, sedimentary and metamorphic rocks. It can also be cut as gems but the softness of apatite prevents its acceptance as a gemstone.
 
It clears confusion in the mental stratas.


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