Origin
Southern and central Africa
  
USA, Southern and central Africa, green, blue, China, India, USA, Italy, green, blue, China, India, USA, Italy
  
Color
White, Colorless, Blue, Red, Green, Yellow, Violet, Black, Green, Red, Blue, White
  
White, Yellow
  
Streak
Colorless
  
Not Available
  
For which Rashi?
Not Available
  
Gemini
  
Planet
Not Available
  
Saturn
  
Element of Planets
Not Available
  
Not Available
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Not Available
  
Projective
  
Deities
Not Available
  
Not Available
  
Not to wear with
Not Available
  
Not Available
  
Powers
Not Available
  
Healing
  
Birthstone
  
  
Planetary
Not Available
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.03-3.18
  
2.44-2.62
  
Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Uneven, Uneven, Gemstones of the world (2001) More from other references
  
Cleavage
{???} Indistinct
  
Not Available
  
Mohs Hardness
7-7.5
  
2.5-5.5
  
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
  
H 4Mg 3Si 2O 9Walter Schumann , Gemstones of the world (2001) More from other references
  
Luster
Vitreous
  
Vitreous, Greasy, Silky
  
Pleochroism
Very strong: pale yellow colorless
  
AbsentWalter Schumann
  
Dispersion
None
  
Transparency
Transparent
  
Translucent
  
Refractive Index
1.614-1.666
  
1.560-1.571
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
  
monoclinic
  
Birefringence
0.014-0.032
  
0.008-0.014
  
Clarity
Transparent
  
Translucent
  
Physical
  
  
Neurological
Not Available
  
Not Available
  
Cardiovascular
Not Available
  
Not Available
  
Respiratory
Not Available
  
Not Available
  
Reproductive
Not Available
  
Not Available
  
Digestive
Not Available
  
Not Available
  
Psychology
Not Available
  
Not Available
  
Healing
Not Available
  
Not Available
  
Qualities Associated
Not Available
  
Not Available
  
Dravite Vs Serpentine Fracture
Fracture is an important parameter when you compare Dravite and Serpentine Physical Properties. It is necessary to understand the significance of these properties, before you compare Dravite Vs Serpentine 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 Dravite is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Irregular, Uneven and Uneven. Serpentine fracture is Gemstones of the world (2001) More from other references, Uneven and Uneven.
Dravite Vs Serpentine Luster
A primary knowledge about Dravite vs Serpentine 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. Dravite exhibits Vitreous luster. Serpentine, on other hand, exhibits Greasy, Silky and Vitreous luster.