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, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Green, gray, Brown, Red
Blue, Violet, Colorless, Red, Green, Brown
For which Rashi?
All
Sagittarius, Scorpio, Sagittarius, Scorpio, Sagittarius, Scorpio
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Projective, Receptive
Projective
Deities
Not Available
Hephaestus
Not to wear with
Not Available
Not Available
Powers
Not Available
Money
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
none
Durability
Not Available
Not Available
Specific Gravity
3.05-3.21
3.64-3.66
Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Good on {110}, poor on {100}
None, but may exhibit slight parting
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
MgAl2O4
Luster
Vitreous, Greasy
Vitreous
Pleochroism
strongly trichroic
Absent
Transparency
Transparent, Translucent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.627-1.650
1.73
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Isometric
Birefringence
0.009-0.010
Not Available
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
Andalusite Vs Spinel Fracture
Fracture is an important parameter when you compare Andalusite and Spinel Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Spinel 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. Spinel fracture is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven.
Andalusite Vs Spinel Luster
A primary knowledge about Andalusite vs Spinel 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. Spinel, on other hand, exhibits Vitreous luster.