Prasiolite Vs Howlite
Origin
Canada
Southern and central Africa
Color
Green
Blue, Colorless, White
Streak
Not Available
White
For which Rashi?
Libra, Sagittarius, Taurus
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
Element of Planets
Water
Earth
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
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
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65
2.45-2.58
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pleochroism
Very weak: light green pale greenWalter Schumann
NilArthur Thomas
Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.544-1.553
1.583-1.608
Optic Character
Not Available
Not Available
Crystal System
Trigonal
monoclinic
Birefringence
0.009
0.019
Clarity
Transparent
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
Prasiolite Vs Howlite Fracture
Fracture is an important parameter when you compare Prasiolite and Howlite Physical Properties. It is necessary to understand the significance of these properties, before you compare Prasiolite 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 Prasiolite is Conchoidal, ConchoidalWalter Schumann and Gemstones of the world (2001). Howlite fracture is Brittle, Conchoidal, Gemstones (2009), Gemstones (2009), UnevenArthur Thomas and UnevenArthur Thomas.
Prasiolite Vs Howlite Luster
A primary knowledge about Prasiolite 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. Prasiolite exhibits Vitreous luster. Howlite, on other hand, exhibits Vitreous luster.