Howlite Vs Jet
Origin
Southern and central Africa
Spain
Color
Blue, Colorless, White
Black
Streak
White
Not Available
For which Rashi?
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
Capricorn
Element of Planets
Earth
Earth
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Receptive
Not to wear with
Not Available
Not Available
Powers
Not Available
Protection
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
2.45-2.58
1.19-1.35
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
None
Not Available
Mohs Hardness
3-3.5
2.5-4
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Not Available
Pleochroism
NilArthur Thomas
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
Refractive Index
1.583-1.608
1.640-1.680
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Amorphous
Birefringence
0.019
Not Available
Clarity
Gemmological Tables (2004) More from other references
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
Howlite Vs Jet Fracture
Fracture is an important parameter when you compare Howlite and Jet Physical Properties. It is necessary to understand the significance of these properties, before you compare Howlite Vs Jet 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 Howlite is Brittle, Conchoidal, Gemstones (2009), Gemstones (2009), UnevenArthur Thomas and UnevenArthur Thomas. Jet fracture is ConchoidalWalter Schumann, ConchoidalWalter Schumann and Gemstones of the world (2001) More from other references.
Howlite Vs Jet Luster
A primary knowledge about Howlite vs Jet 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. Howlite exhibits Vitreous luster. Jet, on other hand, exhibits Waxy luster.