Common Opal Vs Lapis lazuli
Origin
Southern and central Africa
  
Afghanistan
  
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
  
Violet, Blue, White
  
Streak
Not Available
  
Blue
  
For which Rashi?
Not Available
  
Sagittarius
  
Planet
Not Available
  
Venus
  
Element of Planets
Not Available
  
Water
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Not Available
  
Receptive
  
Deities
Not Available
  
Venus
  
Not to wear with
Not Available
  
Not Available
  
Powers
Not Available
  
Protection, Courage
  
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
1.98-2.50
  
2.50-3.00
  
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
  
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
Not Available
  
3,6
  
Mohs Hardness
5.5-6.5
  
5.5
  
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
  
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
  
Luster
Not Available
  
Vitreous, Greasy
  
Pleochroism
AbsentWalter Schumann
  
AbsentWalter Schumann
  
Dispersion
None
  
None
  
Transparency
Translucent
  
Opaque
  
Refractive Index
1.37-1.52
  
1.500-1.670
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Not Available
  
Trigonal
  
Birefringence
Not Available
  
Not Available
  
Clarity
Translucent
  
Gemstones of the world (2001)
  
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
  
Common Opal Vs Lapis lazuli Fracture
Fracture is an important parameter when you compare Common Opal and Lapis lazuli Physical Properties. It is necessary to understand the significance of these properties, before you compare Common Opal Vs Lapis lazuli 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 Common Opal is Conchoidal, Conchoidal and Gemstones of the world (2001). Lapis lazuli fracture is ConchoidalWalter Schumann, Gemstones of the world (2001) and Uneven-Conchoidal.
Common Opal Vs Lapis lazuli Luster
A primary knowledge about Common Opal vs Lapis lazuli 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. Lapis lazuli, on other hand, exhibits Greasy and Vitreous luster.