Howlite Vs Crocoite
Origin
Southern and central Africa
Australia, Southern and central Africa
Color
Blue, Colorless, White
Red, Yellow, orange
Streak
White
yellowish orange
For which Rashi?
Gemini, Virgo
Not Available
Planet
Moon
Not Available
Element of Planets
Earth
Not Available
Energy
Not Available
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Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Quan Yin
Not Available
Not to wear with
Not Available
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Powers
Not Available
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Planetary
Not Available
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Talisman
Not Available
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Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.45-2.58
5.90-6.10
Fracture
UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
Cleavage
None
{110} Distinct, {001} Indistinct, {100} Indistinct
Mohs Hardness
3-3.5
2.5-3
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Adamantine
Pleochroism
NilArthur Thomas
Distinctly trichroic
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004) More from other references
Transparent
Refractive Index
1.583-1.608
2.31-2.66
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
Birefringence
0.019
Not Available
Clarity
Gemmological Tables (2004) More from other references
Transparent
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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Howlite Vs Crocoite Fracture
Fracture is an important parameter when you compare Howlite and Crocoite Physical Properties. It is necessary to understand the significance of these properties, before you compare Howlite Vs Crocoite 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), Brittle and Conchoidal. Crocoite fracture is ConchoidalArthur Thomas, Gemstones (2009) and (e.g. graphite)..
Howlite Vs Crocoite Luster
A primary knowledge about Howlite vs Crocoite 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. Crocoite, on other hand, exhibits Adamantine luster.