Origin
Spain, Brazil, USA, Sri Lanka, Burma, Color: strongly pleochroic, reddish brown, pink / yellowish green, Hardness: 7 7.5, Refractive index: 1.63 1.65, Density: 3.13 3.21, Chemical composition: Al2SiO5, Crystal structure: orthorhombic, Lustre: vitreous, greasy, Origins: Spain, Brazil, USA, Sri Lanka, Burma. Discovered in Andalusia (Spain), the andalusite stone is relatively rare, with big crystals over 10 ct. especially rare. Due to its remarkable pleochroism effect, the stone is highly valued by collectors., brown
India, Canada, Brazil
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Green, gray, Brown, Red
Colorless, Reddish, White, pink, Green, Yellow, Violet, White, pink, Green, Yellow, Violet, White, Colorless, Blue, Green, Brown, Yellow, pink, Violet, White, pink, Green, Yellow, Violet
For which Rashi?
All
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Planet
Venus
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Element of Planets
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Finger
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Ring Metal
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Energy
Projective, Receptive
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Deities
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Not to wear with
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Powers
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Planetary
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Talisman
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Tenacity
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Solubility
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Durability
Not Available
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Specific Gravity
3.05-3.21
2.30-2.50
Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Uneven, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Good on {110}, poor on {100}
Perfect on (001)
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Luster
Vitreous, Greasy
Vitreous, Pearly
Pleochroism
strongly trichroic
Dichroic (colorless)
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.627-1.650
1.530-1.543
Optic Character
Not Available
Uniaxial/-
Crystal System
Orthorhombic
tetragonal
Birefringence
0.009-0.010
0.000-0.003
Clarity
Transparent
Transparent
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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Andalusite Vs Apophyllite Fracture
Fracture is an important parameter when you compare Andalusite and Apophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Apophyllite 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 Andalusite is Gemstones (2009), Splintery, Subconchoidal, Subconchoidal, Uneven, Uneven and UnevenArthur Thomas. Apophyllite fracture is Gemstones (2009), Uneven and UnevenArthur Thomas.
Andalusite Vs Apophyllite Luster
A primary knowledge about Andalusite vs Apophyllite 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. Andalusite exhibits Greasy and Vitreous luster. Apophyllite, on other hand, exhibits Pearly and Vitreous luster.