Grandidierite Vs Corundum
Origin
Madagascar
Southern and central Africa
Color
Green
Violet, Blue, Red, Yellow, Brown, gray
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.85-3.00
3.90-4.05
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Uneven, Uneven, Gems, Difficult, Fibrous
Cleavage
Perfect
None – parting in 3 directions
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Al 2O 3Arthur Thomas , Gemstones (2009)
Luster
Vitreous, Pearly
Adamantine, Vitreous
Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent
Refractive Index
1.578-1.639
1.758-1.780
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Trigonal
Birefringence
0.037-0.039
0.007-0.010
Clarity
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
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
Grandidierite Vs Corundum Fracture
Fracture is an important parameter when you compare Grandidierite and Corundum Physical Properties. It is necessary to understand the significance of these properties, before you compare Grandidierite Vs Corundum 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 Grandidierite is Brittle, Brittle, Gemstones (2009), Uneven and UnevenArthur Thomas. Corundum fracture is Difficult, Fibrous, Gems, Uneven and Uneven.
Grandidierite Vs Corundum Luster
A primary knowledge about Grandidierite vs Corundum 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. Grandidierite exhibits Pearly and Vitreous luster. Corundum, on other hand, exhibits Adamantine and Vitreous luster.