Gedrite Vs Sard
Origin
Southern and central Africa
Southern and central Africa
Color
Brown, Brown, Green, Green, gray, White
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
gray, White, gray, White
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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
3.15-3.259
2.58-2.63
Fracture
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
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Mohs Hardness
5.5-6
6.5-7
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
SiO 2Ulrich Henn and Claudio C.
Luster
Fibrous, Vitreous
Waxy
Pleochroism
Weak to moderate
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Transparent
Translucent
Refractive Index
1.625-1.718
1.535-1.539
Optic Character
Not Available
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Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
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Birefringence
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0.008-0.010
Clarity
Transparent
Translucent
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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Gedrite Vs Sard Fracture
Fracture is an important parameter when you compare Gedrite and Sard Physical Properties. It is necessary to understand the significance of these properties, before you compare Gedrite Vs Sard 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. Sard fracture is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009).
Gedrite Vs Sard Luster
A primary knowledge about Gedrite vs Sard 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. Gedrite exhibits Fibrous and Vitreous luster. Sard, on other hand, exhibits Waxy luster.