Gahnospinel Vs Common Opal
Origin
Sri Lanka
Southern and central Africa
Color
Blue
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
Not Available
Not Available
For which Rashi?
Sagittarius, Scorpio
Not Available
Planet
Pluto
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
Hephaestus
Not Available
Not to wear with
Not Available
Not Available
Powers
Money
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.65-4.55
1.98-2.50
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
None, but may exhibit slight parting
Not Available
Mohs Hardness
7.5-8
5.5-6.5
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Luster
Vitreous
Not Available
Pleochroism
AbsentWalter Schumann
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Gemmological Tables (2004)
Translucent
Refractive Index
1.735-1.790
1.37-1.52
Optic Character
Not Available
Not Available
Crystal System
Isometric
Not Available
Birefringence
Not Available
Not Available
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent
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
Gahnospinel Vs Common Opal Fracture
Fracture is an important parameter when you compare Gahnospinel and Common Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Gahnospinel Vs Common 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 Gahnospinel is ConchoidalArthur Thomas and Gemstones (2009). Common Opal fracture is Conchoidal, Conchoidal and Gemstones of the world (2001).
Gahnospinel Vs Common Opal Luster
A primary knowledge about Gahnospinel vs Common 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. Gahnospinel exhibits Vitreous luster.