Black Opal Vs Aragonite
Origin
Australia
Canada, Pakistan
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Reddish, Greenish, White, Red, Yellow, Green, Grey, Blue, Brown, Colorless, White, gray, Reddish, orange
Streak
Not Available
White
For which Rashi?
Not Available
Virgo, Capricorn, Virgo, Capricorn, Virgo, Capricorn
Element of Planets
Not Available
Earth
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Projective, Receptive
Deities
Not Available
Goddess
Not to wear with
Not Available
Not Available
Powers
Not Available
Protection
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Brittle
Solubility
Not Available
Dilute acid
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
2.93-2.96
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Not Available
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
6-6.5
3.5-4
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Not Available
Vitreous, Resinous
Pleochroism
AbsentWalter Schumann
StrongArthur Thomas
Dispersion
None
Not Available
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.370-1.470
1.525-1.686
Optic Character
Not Available
Not Available
Crystal System
Not Available
Orthorhombic
Birefringence
Not Available
0.155
Clarity
Transparent
Transparent
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
Black Opal Vs Aragonite Fracture
Fracture is an important parameter when you compare Black Opal and Aragonite Physical Properties. It is necessary to understand the significance of these properties, before you compare Black Opal Vs Aragonite 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 Black Opal is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009). Aragonite fracture is Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal.
Black Opal Vs Aragonite Luster
A primary knowledge about Black Opal vs Aragonite 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, on other hand, exhibits Resinous and Vitreous luster.