Origin
Southern and central Africa
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Color
Violet, Blue, Red, Yellow, Brown, gray
Blue, Violet, Colorless, Red, Green, Brown
For which Rashi?
Not Available
Sagittarius, Scorpio, Sagittarius, Scorpio, Sagittarius, Scorpio
Planet
Not Available
Pluto
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Projective
Deities
Not Available
Hephaestus
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
insoluble
none
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
3.64-3.66
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
None – parting in 3 directions
None, but may exhibit slight parting
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
MgAl2O4
Luster
Adamantine, Vitreous
Vitreous
Transparency
Transparent, Translucent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.758-1.780
1.73
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Isometric
Birefringence
0.007-0.010
Not Available
Clarity
Gemmological Tables (2004) More from other references
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
Corundum Vs Spinel Fracture
Fracture is an important parameter when you compare Corundum and Spinel Physical Properties. It is necessary to understand the significance of these properties, before you compare Corundum 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 Corundum is Difficult, Fibrous, Gems, Uneven and Uneven. Spinel fracture is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven.
Corundum Vs Spinel Luster
A primary knowledge about Corundum 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. Corundum exhibits Adamantine and Vitreous luster. Spinel, on other hand, exhibits Vitreous luster.