Origin
Ethiopia
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
Yellow, White, Red, Brown, Blue
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Green, gray, Brown, Red
For which Rashi?
Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio
All
Element of Planets
Earth, Air, Water
Not Available
Finger
Not Available
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Ring Metal
Not Available
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Energy
Projective, Receptive
Projective, Receptive
Deities
Cupid
Not Available
Not to wear with
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Powers
Astral Projection, Psychicism
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Planetary
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Talisman
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Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
3.05-3.21
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
None
Good on {110}, poor on {100}
Chemical Composition
SiO2 · nH2O
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Vitreous, Pearly
Vitreous, Greasy
Pleochroism
None
strongly trichroic
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent
Refractive Index
1.37-1.52
1.627-1.650
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Orthorhombic
Birefringence
Not Available
0.009-0.010
Clarity
Transparent
Transparent
Neurological
Not Available
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Cardiovascular
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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
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Healing
Not Available
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Qualities Associated
Not Available
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Opal Vs Andalusite Fracture
Fracture is an important parameter when you compare Opal and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal 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 Opal is Brittle, Conchoidal, Conchoidal and Gemstones of the world (2001) More from other references. Andalusite fracture is Gemstones (2009), Splintery, Subconchoidal, Subconchoidal, Uneven, Uneven and UnevenArthur Thomas.
Opal Vs Andalusite Luster
A primary knowledge about Opal 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. Opal exhibits Pearly and Vitreous luster. Andalusite, on other hand, exhibits Greasy and Vitreous luster.