Sellaite Vs Sheen Obsidian
Origin
Brazil
Southern and central Africa
Color
Colorless, White
Black
Streak
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
Brittle
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.14-3.16
2.33-2.50
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {010} and {110}
Not Available
Mohs Hardness
5-5.5
5-5.5
Chemical Composition
MgF 2Ulrich Henn and Claudio C.
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Luster
Vitreous
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Pleochroism
Not Available
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Dispersion
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Transparency
Transparent
Transparent, Translucent
Refractive Index
1.378-1.390
1.450-1.550
Optic Character
Not Available
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Crystal System
tetragonal
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Birefringence
0.012
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Clarity
Transparent
Transparent
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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Sellaite Vs Sheen Obsidian Fracture
Fracture is an important parameter when you compare Sellaite and Sheen Obsidian Physical Properties. It is necessary to understand the significance of these properties, before you compare Sellaite Vs Sheen Obsidian 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 Sellaite is Brittle, Conchoidal, ConchoidalAnthony et al and Handbook of mineralogy (2001). Sheen Obsidian fracture is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009).
Sellaite Vs Sheen Obsidian Luster
A primary knowledge about Sellaite vs Sheen Obsidian 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. Sellaite exhibits Vitreous luster.