Origin
Australia, Southern and central Africa, green, brown, Australia, France, green, brown, Australia, France
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Color
Green, Colorless, gray, Yellow, White
Blue, Violet, Colorless, Red, Green, Brown
For which Rashi?
Libra
Sagittarius, Scorpio, Sagittarius, Scorpio, Sagittarius, Scorpio
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
Money
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Brittle
Not Available
Solubility
Not Available
none
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
3.64-3.66
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Distinct on [001]
None, but may exhibit slight parting
Chemical Composition
Ca2Al2Si3O12(OH)
MgAl2O4
Pleochroism
AbsentWalter Schumann
Absent
Transparency
Translucent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.611-1.673
1.73
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Isometric
Birefringence
0.021-0.033
Not Available
Clarity
TranslucentHerve Nicolas Lazzarelli
TransparentUlrich Henn and Claudio C. Milisenda
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 Spinel Fracture
Fracture is an important parameter when you compare Prehnite and Spinel Physical Properties. It is necessary to understand the significance of these properties, before you compare Prehnite Vs Spinel 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. Spinel fracture is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven.
Prehnite Vs Spinel Luster
A primary knowledge about Prehnite vs Spinel 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. Spinel, on other hand, exhibits Vitreous luster.