Quartz Vs Howlite
Origin
Brazil
Southern and central Africa
Color
Black, Colorless, Green, Violet, White, Yellow, Blue, Red, pink, Brown, gray
Blue, Colorless, White
For which Rashi?
Taurus, Capricorn, Sagittarius
Gemini, Virgo
Element of Planets
Earth, Water
Earth
Energy
Receptive
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Healing, Protection
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, Brittle, Gems
UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
{0110} Indistinct
None
Chemical Composition
SiO2
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pleochroism
None
NilArthur Thomas
Transparency
Transparent, Translucent, Transparent to 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
Opaque
Gemmological Tables (2004) More from other references
Neurological
Not Available
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Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
Not Available
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Quartz Vs Howlite Fracture
Fracture is an important parameter when you compare Quartz and Howlite Physical Properties. It is necessary to understand the significance of these properties, before you compare Quartz 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 Quartz is Conchoidal, Brittle and Gems. Howlite fracture is UnevenArthur Thomas, Gemstones (2009), Brittle and Conchoidal.
Quartz Vs Howlite Luster
A primary knowledge about Quartz 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. Quartz exhibits Vitreous luster. Howlite, on other hand, exhibits Vitreous luster.