Howlite Vs Andradite
Origin
Southern and central Africa
Italy, Russia
Color
Blue, Colorless, White
Colorless, Green, Black, Brown, Red, Greenish, Yellow, gray
For which Rashi?
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
Not Available
Planet
Moon
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Element of Planets
Earth
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Energy
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Finger
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Ring Metal
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Deities
Quan Yin
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Not to wear with
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Powers
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Planetary
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Talisman
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Tenacity
Not Available
Brittle
Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.45-2.58
3.70-4.10
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
Mohs Hardness
3-3.5
6.5-7
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Luster
Vitreous
Adamantine, Resinous
Pleochroism
NilArthur Thomas
Not Available
Transparency
Gemmological Tables (2004) More from other references
Transparent
Refractive Index
1.583-1.608
1.88-1.94
Optic Character
Not Available
Not Available
Crystal System
monoclinic
cubic
Birefringence
0.019
0.057
Clarity
Gemmological Tables (2004) More from other references
Transparent
Neurological
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Cardiovascular
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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
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Howlite Vs Andradite Fracture
Fracture is an important parameter when you compare Howlite and Andradite Physical Properties. It is necessary to understand the significance of these properties, before you compare Howlite Vs Andradite 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 UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle and Conchoidal. Andradite fracture is Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas and Gemstones (2009).
Howlite Vs Andradite Luster
A primary knowledge about Howlite vs Andradite 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. Andradite, on other hand, exhibits Adamantine and Resinous luster.
