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
Southern and central Africa, green
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Green, gray, Brown, Red
Green
For which Rashi?
All
Capricorn, Scorpio, Capricorn, Scorpio, Capricorn, Scorpio
Element of Planets
Not Available
Earth
Finger
Not Available
Not Available
Ring Metal
Not Available
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Energy
Projective, Receptive
Receptive
Deities
Not Available
Freyja
Not to wear with
Not Available
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Powers
Not Available
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
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.05-3.21
3.25-4.10
Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Gemstones (2009), Uneven
Cleavage
Good on {110}, poor on {100}
Perfect on { 2 01} fair on {010}
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Cu2CO3(OH)2
Luster
Vitreous, Greasy
Adamantine, Vitreous, Silky, Fibrous
Pleochroism
strongly trichroic
Not Available
Transparency
Transparent, Translucent
Opaque
Refractive Index
1.627-1.650
1.655-1.909
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
monoclinic
Birefringence
0.009-0.010
0.254
Clarity
Transparent
Gemmological Tables (2004) More from other references
Neurological
Not Available
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Cardiovascular
Not Available
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Respiratory
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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
Not Available
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Qualities Associated
Not Available
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Andalusite Vs Malachite Fracture
Fracture is an important parameter when you compare Andalusite and Malachite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Malachite 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. Malachite fracture is Conchoidal, Conchoidal, Gemstones (2009) and Uneven.
Andalusite Vs Malachite Luster
A primary knowledge about Andalusite vs Malachite 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. Malachite, on other hand, exhibits Adamantine, Fibrous, Silky and Vitreous luster.