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
Brazil
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Green, gray, Brown, Red
Yellow, Red, White, White, Colorless, Blue, Red, Green, Yellow, pink, Black, Blue, Brown
For which Rashi?
All
Gemini
Planet
Venus
Not Available
Element of Planets
Not Available
Water
Finger
Not Available
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Ring Metal
Not Available
Not Available
Energy
Projective, Receptive
Projective
Deities
Not Available
Bragi
Not to wear with
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Not Available
Powers
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Courage, Love, Healing, Protection
Planetary
Not Available
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Talisman
Not Available
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Tenacity
Not Available
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Solubility
Not Available
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Durability
Not Available
Not Available
Specific Gravity
3.05-3.21
2.60-2.64
Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Cleavage
Good on {110}, poor on {100}
Indiscernible
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
SiO2
Luster
Vitreous, Greasy
Vitreous
Pleochroism
strongly trichroic
Absent
Transparency
Transparent, Translucent
Translucent
Refractive Index
1.627-1.650
1.530-1.543
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Trigonal
Birefringence
0.009-0.010
0.004
Clarity
Transparent
Translucent
Neurological
Not Available
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Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
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Not Available
Qualities Associated
Not Available
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Andalusite Vs Agate Fracture
Fracture is an important parameter when you compare Andalusite and Agate Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Agate 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. Agate fracture is Conchoidal, Gemstones of the world (2001) and UnevenWalter Schumann.
Andalusite Vs Agate Luster
A primary knowledge about Andalusite vs Agate 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. Agate, on other hand, exhibits Vitreous luster.