Origin
Australia, Southern and central Africa, green, brown, Australia, France, green, brown, Australia, France
Southern and central Africa
Color
Green, Colorless, gray, Yellow, White
Black, Reddish, gray, Red
Streak
Colorless
Black, Brown, Reddish, Red
For which Rashi?
Libra
Aries, Aquarius, Aries, Aquarius, Aries, Aquarius
Element of Planets
Earth
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Projective
Not to wear with
Not Available
Not Available
Powers
Not Available
Healing
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
5.00-5.30
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Cleavage
Distinct on [001]
None, may show partings on {0001} and {10 1 1}
Chemical Composition
Ca2Al2Si3O12(OH)
Fe 2O 3Arthur Thomas , Gemstones (2009)
Luster
Vitreous
Not Available
Pleochroism
AbsentWalter Schumann
O = brownish red; E = yellowish red
Dispersion
None
Not Available
Transparency
Translucent
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Refractive Index
1.611-1.673
2.690-3.220
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Trigonal
Birefringence
0.021-0.033
0.280
Clarity
TranslucentHerve Nicolas Lazzarelli
OpaqueHerve Nicolas Lazzarelli
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
Prehnite Vs Hematite Fracture
Fracture is an important parameter when you compare Prehnite and Hematite Physical Properties. It is necessary to understand the significance of these properties, before you compare Prehnite Vs Hematite 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 Prehnite is Brittle, Gemstones of the world (2001) More from other references, Metallic, Uneven, UnevenWalter Schumann, White and Yellow. Hematite fracture is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Uneven and Uneven.
Prehnite Vs Hematite Luster
A primary knowledge about Prehnite vs Hematite 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. Prehnite exhibits Vitreous luster.