Gahnospinel Vs Howlite
Origin
Sri Lanka
Southern and central Africa
Color
Blue
Blue, Colorless, White
Streak
Not Available
White
For which Rashi?
Sagittarius, Scorpio
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
Element of Planets
Not Available
Earth
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Projective
Not Available
Deities
Hephaestus
Quan Yin
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
2.45-2.58
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
None, but may exhibit slight parting
None
Mohs Hardness
7.5-8
3-3.5
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pleochroism
AbsentWalter Schumann
NilArthur Thomas
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004)
Gemmological Tables (2004) More from other references
Refractive Index
1.735-1.790
1.583-1.608
Optic Character
Not Available
Not Available
Crystal System
Isometric
monoclinic
Birefringence
Not Available
0.019
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Gemmological Tables (2004) More from other references
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 Howlite Fracture
Fracture is an important parameter when you compare Gahnospinel and Howlite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gahnospinel Vs Howlite 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). Howlite fracture is Brittle, Conchoidal, Gemstones (2009), Gemstones (2009), UnevenArthur Thomas and UnevenArthur Thomas.
Gahnospinel Vs Howlite Luster
A primary knowledge about Gahnospinel vs Howlite 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. Howlite, on other hand, exhibits Vitreous luster.