Blue John Vs Demantoid Garnet
Origin
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Russia, Southern and central Africa, Color: green, yellowish green, Hardness: 6.5, Refractive index: 1.88 1.89, Density: 3.82 3.85, Chemical composition: Ca3Fe2(SiO4)3, Crystal structure: isometric, Origins: Russia, Namibia
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Green, Red, Green, orange
Streak
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For which Rashi?
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Planet
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Element of Planets
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Finger
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Ring Metal
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Energy
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Deities
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Not to wear with
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Powers
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Planetary
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Talisman
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Tenacity
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Solubility
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Durability
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Specific Gravity
3.00-3.25
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Fracture
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Cleavage
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Mohs Hardness
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Chemical Composition
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
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Luster
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Pleochroism
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Dispersion
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Transparency
Transparent
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Refractive Index
1.432-1.436
1.88-1.89
Optic Character
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Crystal System
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Isometric
Birefringence
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Clarity
Transparent
Color grading system
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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Blue John Vs Demantoid Garnet Fracture
Fracture is an important parameter when you compare Blue John and Demantoid Garnet Physical Properties. It is necessary to understand the significance of these properties, before you compare Blue John Vs Demantoid Garnet 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.
Blue John Vs Demantoid Garnet Luster
A primary knowledge about Blue John vs Demantoid Garnet 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.