Origin
USA
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
Color
Red, Brown, Yellow, pink
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
For which Rashi?
Not Available
All
Planet
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Venus
Element of Planets
Not Available
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Energy
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Projective, Receptive
Finger
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Ring Metal
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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
3.06-3.19
3.05-3.21
Fracture
UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
{010} Perfect
Good on {110}, poor on {100}
Chemical Composition
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Not Available
Vitreous, Greasy
Pleochroism
NilArthur Thomas
strongly trichroic
Transparency
Translucent
Transparent, Translucent
Refractive Index
1.627-1.663
1.627-1.650
Optic Character
Not Available
Not Available
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
Orthorhombic
Birefringence
0.032-0.035
0.009-0.010
Clarity
Translucent
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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Friedelite Vs Andalusite Fracture
Fracture is an important parameter when you compare Friedelite and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Friedelite Vs Andalusite 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 Friedelite is UnevenArthur Thomas, Gemstones (2009) Tough, Brittle and Uneven. Andalusite fracture is Uneven, Subconchoidal, Splintery, UnevenArthur Thomas and Gemstones (2009).
Friedelite Vs Andalusite Luster
A primary knowledge about Friedelite vs Andalusite 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, on other hand, exhibits Vitreous and Greasy luster.