Origin
Canada, Pakistan
  
Ethiopia
  
Color
Reddish, Greenish, White, Red, Yellow, Green, Grey, Blue, Brown, Colorless, White, gray, Reddish, orange
  
Yellow, White, Red, Brown, Blue
  
Streak
White
  
White
  
For which Rashi?
Virgo, Capricorn, Virgo, Capricorn, Virgo, Capricorn
  
Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio
  
Planet
Sun
  
Mercury
  
Element of Planets
Earth
  
Earth, Air, Water
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Projective, Receptive
  
Projective, Receptive
  
Deities
Goddess
  
Cupid
  
Not to wear with
Not Available
  
Not Available
  
Powers
Protection
  
Astral Projection, Psychicism
  
Birthstone
  
  
Planetary
Not Available
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
Brittle
  
BrittleWalter Schumann
  
Solubility
Dilute acid
  
hot salt water
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.93-2.96
  
1.98-2.25
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
  
Cleavage
Distinct on {010}, imperfect {110} and {011}
  
None
  
Mohs Hardness
3.5-4
  
5-6.5
  
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
SiO2 · nH2O
  
Luster
Vitreous, Resinous
  
Vitreous, Pearly
  
Pleochroism
StrongArthur Thomas
  
None
  
Dispersion
Not Available
  
None
  
Transparency
Transparent, Translucent
  
Transparent, Translucent, Transparent to translucent
  
Refractive Index
1.525-1.686
  
1.37-1.52
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Orthorhombic
  
Trigonal
  
Birefringence
0.155
  
Not Available
  
Clarity
Transparent
  
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
  
Aragonite Vs Opal Fracture
Fracture is an important parameter when you compare Aragonite and Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Aragonite Vs 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 Aragonite is Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal. Opal fracture is Brittle, Conchoidal, Conchoidal and Gemstones of the world (2001) More from other references.
Aragonite Vs Opal Luster
A primary knowledge about Aragonite vs 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. Aragonite exhibits Resinous and Vitreous luster. Opal, on other hand, exhibits Pearly and Vitreous luster.