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, 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
Canada, Russia, Kenya, Brazil, Norway
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Green, Greenish, Black, Reddish, Brown
Streak
White
Yellow, Yellowish-grey, gray
For which Rashi?
All
Pisces
Planet
Venus
Not Available
Element of Planets
Not Available
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Energy
Projective, Receptive
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Finger
Not Available
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Ring Metal
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Deities
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Not Noted
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
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Brittle
Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.05-3.21
3.50-3.60
Fracture
Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Uneven, Brittle, Metallic
Cleavage
Good on {110}, poor on {100}
Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.
Luster
Vitreous, Greasy
Vitreous, Resinous
Pleochroism
strongly trichroic
X = emerald green
Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.627-1.650
1.720-1.778
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
monoclinic
Birefringence
0.009-0.010
0.037-0.061
Clarity
Transparent
Gemmological Tables (2004) More from other references
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 Aegirine Fracture
Fracture is an important parameter when you compare Andalusite and Aegirine Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Aegirine 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 Uneven, Subconchoidal, Splintery, UnevenArthur Thomas and Gemstones (2009). Aegirine fracture is Uneven, Brittle and Metallic.
Andalusite Vs Aegirine Luster
A primary knowledge about Andalusite vs Aegirine 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 Vitreous and Greasy luster. Aegirine, on other hand, exhibits Vitreous and Resinous luster.