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
Australia
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Blue, Grey, Greenish, Yellow, White, gray, Green, Brown
For which Rashi?
All
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Planet
Venus
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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 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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Brittle
Solubility
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Soluble
Durability
Not Available
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Specific Gravity
3.05-3.21
4.014
Fracture
Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Uneven, Conchoidal
Cleavage
Good on {110}, poor on {100}
None
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
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Luster
Vitreous, Greasy
Resinous
Pleochroism
strongly trichroic
None
Transparency
Transparent, Translucent
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Refractive Index
1.627-1.650
1.653-1.688
Optic Character
Not Available
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Crystal System
Orthorhombic
Trigonal
Birefringence
0.009-0.010
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Clarity
Transparent
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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 Plumbogummite Fracture
Fracture is an important parameter when you compare Andalusite and Plumbogummite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Plumbogummite 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). Plumbogummite fracture is Uneven and Conchoidal.
Andalusite Vs Plumbogummite Luster
A primary knowledge about Andalusite vs Plumbogummite 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. Plumbogummite, on other hand, exhibits Resinous luster.