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Dravite Vs Kyanite


Kyanite Vs Dravite


Astrology

Origin
Southern and central Africa  
Brazil, USA, Switzerland, Kenya, Mozambique, Russia, Nepal, India, Burma  

Color
White, Colorless, Blue, Red, Green, Yellow, Violet, Black  
Blue, Yellow, Colorless, White, gray, Green, Black  

Streak
Colorless  
White  

For which Rashi?
Not Available  
Aries, Libra, Taurus  

Planet
Not Available  
Jupiter  

Element of Planets
Not Available  
Water  

Energy
Not Available  
Receptive  

How to Wear?
  
  

Finger
Not Available  
Not Available  

Ring Metal
Not Available  
Not Available  

Deities
Not Available  
Endurance, Meditation, Love  

Not to wear with
Not Available  
Not Available  

Powers
Not Available  
Love  

Birthstone
  
  

Planetary
Not Available  
Not Available  

Talisman
Not Available  
Not Available  

Physical Properties

Tenacity
Not Available  
Brittle  

Solubility
Not Available  
Not Available  

Durability
Not Available  
Not Available  

Specific Gravity
3.03-3.18  
3.53-3.65  

Fracture
Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle  
Splintery, Brittle, Metallic  

Cleavage
{???} Indistinct  
[100] perfect [010] imperfect with 79° angle between  

Mohs Hardness
7-7.5  
4-7  

Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)  
Not Available  

Optical Properties

Luster
Vitreous  
Vitreous, Pearly  

Pleochroism
Very strong: pale yellow colorless  
Trichroic  

Dispersion
0.02  
22
Not Available  

Transparency
Transparent  
Not Available  

Refractive Index
1.614-1.666  
1.71-1.74  

Optic Character
Not Available  
Not Available  

Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m  
Triclinic  

Birefringence
0.014-0.032  
Not Available  

Clarity
Transparent  
Color grading system  

Benefits

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  

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Dravite Vs Kyanite Fracture

Fracture is an important parameter when you compare Dravite and Kyanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dravite Vs Kyanite 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 Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal and Brittle. Kyanite fracture is Splintery, Brittle and Metallic.

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Dravite Vs Kyanite Luster

A primary knowledge about Dravite vs Kyanite 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. Kyanite, on other hand, exhibits Vitreous and Pearly luster.

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