Onyx Vs Grandidierite
Origin
Not Available
Madagascar
Streak
Not Available
White
For which Rashi?
Capricorn
Not Available
Planet
Saturn
Not Available
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Projective
Not Available
Deities
Mars
Not Available
Not to wear with
Not Available
Not Available
Powers
Protection
Not Available
Planetary
Not Available
Not Available
Talisman
Capricorn
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
2.85-3.00
Fracture
Not Available
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Cleavage
Indiscernible
Perfect
Chemical Composition
SiO2
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Not Available
visible
Dispersion
Not Available
Not Available
Transparency
Translucent, Opaque, Translucent to opaque
Gemmological Tables (2004) More from other references
Refractive Index
1.530-1.543
1.578-1.639
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Orthorhombic
Birefringence
Not Available
0.037-0.039
Clarity
OpaqueHerve Nicolas Lazzarelli
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
Onyx Vs Grandidierite Fracture
Fracture is an important parameter when you compare Onyx and Grandidierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Onyx Vs Grandidierite 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. Grandidierite fracture is Brittle, Brittle, Gemstones (2009), Uneven and UnevenArthur Thomas.
Onyx Vs Grandidierite Luster
A primary knowledge about Onyx vs Grandidierite 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. Onyx exhibits Vitreous luster. Grandidierite, on other hand, exhibits Pearly and Vitreous luster.