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