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