Origin
Southern and central Africa
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
Color
Red, Yellow, orange
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Green, gray, Brown, Red
For which Rashi?
Not Available
All
Planet
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Venus
Element of Planets
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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
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Specific Gravity
3.56
3.05-3.21
Fracture
(e.g. graphite).
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
{010} Good
Good on {110}, poor on {100}
Mohs Hardness
Not Available
7.5
Chemical Composition
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Not Available
Vitreous, Greasy
Pleochroism
Nearly colorless to pale golden yellowAnthony et al
strongly trichroic
Transparency
Gems
Transparent, Translucent
Refractive Index
2.538-2.704
1.627-1.650
Optic Character
Not Available
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Crystal System
Not Available
Orthorhombic
Birefringence
0.166
0.009-0.010
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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Realgar Vs Andalusite Fracture
Fracture is an important parameter when you compare Realgar and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Realgar 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 Realgar is (e.g. graphite).. Andalusite fracture is Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas and Gemstones (2009).
Realgar Vs Andalusite Luster
A primary knowledge about Realgar 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.
