Chalcedony Vs Sillimanite
Origin
Zimbabwe
  
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
  
Color
Violet, White, gray, Blue, Brown, Black
  
Blue, Green, Brownish, Greenish, Colorless, gray
  
Streak
White
  
White
  
For which Rashi?
Cancer, Sagittarius, Cancer, Sagittarius, Cancer, Sagittarius
  
Not Available
  
Planet
Moon
  
Not Available
  
Element of Planets
Water
  
Not Available
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Receptive
  
Not Available
  
Deities
Goddess Whope
  
Not Available
  
Not to wear with
Not Available
  
Not Available
  
Powers
Protection
  
Not Available
  
Birthstone
  
  
Planetary
Not Available
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
Not Available
  
Tough
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.55-2.70
  
3.20-3.26
  
Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
  
Splintery
  
Cleavage
Absent
  
{010} perfect
  
Mohs Hardness
6.5-7
  
6-7.5
  
Chemical Composition
SiO2
  
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Luster
Vitreous
  
Vitreous, Subadamantine, Silky
  
Pleochroism
AbsentWalter Schumann
  
Colourless to pale brown to yellow
  
Dispersion
None
  
Not Available
  
Transparency
Translucent, Translucent to opaque
  
Transparent, Translucent
  
Refractive Index
1.530-1.543
  
1.653-1.685
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Trigonal
  
Orthorhombic
  
Birefringence
0.003-0.009
  
0.020-0.022
  
Clarity
Translucent
  
Transparent
  
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
  
Chalcedony Vs Sillimanite Fracture
Fracture is an important parameter when you compare Chalcedony and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Chalcedony Vs Sillimanite 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 Chalcedony is Conchoidal, Conchoidal, Splintery, Splintery, Uneven, Uneven and UnevenWalter Schumann. Sillimanite fracture is Splintery.
Chalcedony Vs Sillimanite Luster
A primary knowledge about Chalcedony vs Sillimanite 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. Chalcedony exhibits Vitreous luster. Sillimanite, on other hand, exhibits Silky, Subadamantine and Vitreous luster.