Origin
Southern and central Africa
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Color
Blue, Colorless, White
Blue, Violet, Greenish, Brown, Colorless, Colorless, Blue, Violet, Yellow, gray
For which Rashi?
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
Not Available
Planet
Moon
Not Available
Element of Planets
Earth
Not Available
Finger
Not Available
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Ring Metal
Not Available
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Energy
Not Available
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Deities
Quan Yin
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Not to wear with
Not Available
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Powers
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Planetary
Not Available
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Talisman
Not Available
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Tenacity
Not Available
Brittle
Solubility
Not Available
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Durability
Not Available
Not Available
Specific Gravity
2.45-2.58
2.57-2.66
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Subconchoidal, Conchoidal, Brittle
Cleavage
None
Fair on {100}, poor on {001} and {010}
Mohs Hardness
3-3.5
7-7.5
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg2Al4Si5O18
Luster
Vitreous
Greasy, Vitreous
Pleochroism
NilArthur Thomas
X = pale yellow
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004) More from other references
Not Available
Refractive Index
1.583-1.608
Not Available
Optic Character
Not Available
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Crystal System
monoclinic
Orthorhombic
Birefringence
0.019
Not Available
Clarity
Gemmological Tables (2004) More from other references
Not Available
Neurological
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Cardiovascular
Not Available
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
Not Available
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Howlite Vs Cordierite Fracture
Fracture is an important parameter when you compare Howlite and Cordierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Howlite Vs Cordierite 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. Cordierite fracture is Brittle, Conchoidal and Subconchoidal.
Howlite Vs Cordierite Luster
A primary knowledge about Howlite vs Cordierite 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. Cordierite, on other hand, exhibits Greasy and Vitreous luster.