Origin
Sri Lanka, India, Brazil
  
Pakistan, Tanzania
  
Color
Green, Brown, Brown, Colorless, Green, gray, Yellow
  
Brown, gray, Green, Blue, rose, Red
  
Streak
Brownish, White, Brownish, White
  
White, Colorless
  
For which Rashi?
Not Available
  
Not Available
  
Planet
Not Available
  
Not Available
  
Element of Planets
Not Available
  
Not Available
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Not Available
  
Not Available
  
Deities
Not Available
  
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Not to wear with
Not Available
  
Not Available
  
Powers
Not Available
  
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Birthstone
  
  
Planetary
Not Available
  
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Talisman
Not Available
  
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Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.55-3.73
  
3.20-3.50
  
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even
  
Cleavage
none
  
Perfect {010} imperfect {100}
  
Mohs Hardness
7-7.5
  
6-7
  
Chemical Composition
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  
Ca2Al3(SiO4)3(OH)
  
Luster
Greasy, Vitreous
  
Vitreous
  
Pleochroism
None
  
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
  
Transparency
Gemmological Tables (2004) More from other references
  
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.
  
Refractive Index
1.730-1.760
  
1.685-1.707
  
Optic Character
Not Available
  
Not Available
  
Crystal System
cubic
  
Orthorhombic
  
Birefringence
0.020
  
0.006-0.018
  
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
  
Transparent
  
Physical
  
  
Neurological
Not Available
  
Not Available
  
Cardiovascular
Not Available
  
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Respiratory
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Reproductive
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Digestive
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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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Grossular Vs Zoisite Fracture
Fracture is an important parameter when you compare Grossular and Zoisite Physical Properties. It is necessary to understand the significance of these properties, before you compare Grossular Vs Zoisite 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 Grossular is Brittle, Conchoidal, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven. Zoisite fracture is Conchoidal, ConchoidalArthur Thomas, Even, Gemstones (2009) and Uneven.
Grossular Vs Zoisite Luster
A primary knowledge about Grossular vs Zoisite 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. Grossular exhibits Greasy and Vitreous luster. Zoisite, on other hand, exhibits Vitreous luster.