Gahnospinel Vs Poldervaartite
Origin
Sri Lanka
Southern and central Africa
Color
Blue
Colorless, White
Streak
Not Available
White
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
2.91
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Handbook of mineralogy (2001)
Cleavage
None, but may exhibit slight parting
None
Mohs Hardness
7.5-8
Not Available
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
Pleochroism
AbsentWalter Schumann
Weak: colorless light gray bluish grayAnthony et al
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004)
Transparent
Refractive Index
1.735-1.790
1.634-1.656
Optic Character
Not Available
Not Available
Crystal System
Isometric
Not Available
Birefringence
Not Available
Not Available
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
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 Poldervaartite Fracture
Fracture is an important parameter when you compare Gahnospinel and Poldervaartite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gahnospinel Vs Poldervaartite 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). Poldervaartite fracture is Handbook of mineralogy (2001).
Gahnospinel Vs Poldervaartite Luster
A primary knowledge about Gahnospinel vs Poldervaartite 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. Poldervaartite, on other hand, exhibits Vitreous luster.