Gypsum Vs Black Opal
Color
Colorless, White, Colorless, Greenish, Brown, White, Colorless, Greenish, Brown, White, Colorless, Greenish, Brown
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
White
Not Available
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
Flexible
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.20-2.40
1.97-2.22
Fracture
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {010}, distinct on {100}
Not Available
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
SiO 2 + H 2OUlrich Henn and Claudio C.
Luster
Vitreous, Silky, Pearly, Waxy
Not Available
Pleochroism
None
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.521-1.531
1.370-1.470
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Not Available
Birefringence
0.010
Not Available
Clarity
Transparent
Transparent
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
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Digestive
Not Available
Not Available
Psychology
Not Available
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Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
Gypsum Vs Black Opal Fracture
Fracture is an important parameter when you compare Gypsum and Black Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Gypsum Vs Black Opal 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 Gypsum is Conchoidal, Fibrous, Gemstones (2009), Splintery and UnevenArthur Thomas. Black Opal fracture is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009).
Gypsum Vs Black Opal Luster
A primary knowledge about Gypsum vs Black Opal 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. Gypsum exhibits Pearly, Silky, Vitreous and Waxy luster.