Foitite Vs Crystal Opal
Origin
Not Available, Southern and central Africa
  
Australia
  
Color
Violet, Black
  
White, Colorless, Yellow
  
Streak
gray, White, gray, White
  
Not Available
  
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
  
Not Available
  
Not to wear with
Not Available
  
Not Available
  
Powers
Not Available
  
Not Available
  
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
3.17
  
1.97-2.22
  
Fracture
Handbook of mineralogy (2001)
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
None
  
Not Available
  
Mohs Hardness
7
  
5.5-6.5
  
Chemical Composition
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
  
SiO 2 + H 2OUlrich Henn and Claudio C.
  
Luster
Vitreous
  
Not Available
  
Pleochroism
Strong: pale lavender dark blueAnthony et al
  
AbsentWalter Schumann
  
Dispersion
Not Available
  
None
  
Transparency
TranslucentAnthony et al, Translucent
  
Transparent
  
Refractive Index
Not Available
  
1.370-1.
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
  
Not Available
  
Birefringence
Not Available
  
Not Available
  
Clarity
TranslucentAnthony et al
  
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
  
Foitite Vs Crystal Opal Fracture
Fracture is an important parameter when you compare Foitite and Crystal Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Foitite Vs Crystal Opal 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 Foitite is Handbook of mineralogy (2001). Crystal Opal fracture is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009).
Foitite Vs Crystal Opal Luster
A primary knowledge about Foitite vs Crystal Opal 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. Foitite exhibits Vitreous luster.