Origin
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Mexico, USA, Canada, Madagascar, Spain, Russia, Sri Lanka, India, Burma, Color: green, greenish yellow, blue, violet, Hardness: 5, Refractive index: 1.60 1.67, Density: 3.17 3.35, Chemical composition: Phosphate composition, Crystal structure: hexagonal, Lustre: vitreous, Origins: Mexico, USA, Canada, Madagascar, Spain, Russia, Sri Lanka, India, brown, green, Yellow, violet, brown, green, Yellow, violet
Color
Blue, Violet, Greenish, Brown, Colorless, Colorless, Blue, Violet, Yellow, gray
Yellow, Green, Blue, Blue, Green, White, Yellow, Green, Red, Blue, Green, Colorless, Yellow, Blue, Violet, pink, Brown
For which Rashi?
Not Available
Gemini
Planet
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Mercury
Element of Planets
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Earth
Finger
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Ring Metal
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Energy
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Projective
Deities
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Jupiter/Neptune
Not to wear with
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Powers
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Healing
Planetary
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Talisman
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Tenacity
Brittle
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Solubility
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Durability
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Specific Gravity
2.57-2.66
3.16-3.23
Fracture
Subconchoidal, Conchoidal, Brittle
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
Cleavage
Fair on {100}, poor on {001} and {010}
[0001] indistinct, [1010] indistinct
Chemical Composition
Mg2Al4Si5O18
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Greasy, Vitreous
Vitreous
Pleochroism
X = pale yellow
Blue stones – strong
Transparency
Not Available
Gemmological Tables (2004) More from other references
Refractive Index
Not Available
1.628-1.651
Optic Character
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Crystal System
Orthorhombic
Hexagonal
Birefringence
Not Available
0.002-0.008
Clarity
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TransparentUlrich Henn and Claudio C. Milisenda
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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Cordierite Vs Apatite Fracture
Fracture is an important parameter when you compare Cordierite and Apatite Physical Properties. It is necessary to understand the significance of these properties, before you compare Cordierite Vs Apatite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Cordierite is Brittle, Conchoidal and Subconchoidal. Apatite fracture is Brittle, Conchoidal, Conchoidal, Conchoidal to uneven, ConchoidalArthur Thomas, Gemstones (2009) and Uneven.
Cordierite Vs Apatite Luster
A primary knowledge about Cordierite vs Apatite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Cordierite exhibits Greasy and Vitreous luster. Apatite, on other hand, exhibits Vitreous luster.