Origin
USA
Southern and central Africa
Color
Colorless, Colorless, White, Yellow
White, Colorless, Blue, Red, Green, Yellow, Violet, Black, Green, Red, Blue, White
For which Rashi?
Not Available
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Planet
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Element of Planets
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Finger
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Ring Metal
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Energy
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Deities
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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
Brittle
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.79-2.87
3.03-3.18
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
{???} Indistinct
Mohs Hardness
5.5-6
7-7.5
Chemical Composition
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
Vitreous, Adamantine, Pearly
Vitreous
Pleochroism
AbsentWalter Schumann
Very strong: pale yellow colorless
Transparency
Gemmological Tables (2004) More from other references
Transparent
Refractive Index
1.552-1.562
1.614-1.666
Optic Character
Not Available
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Crystal System
monoclinic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.009
0.014-0.032
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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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Beryllonite Vs Dravite Fracture
Fracture is an important parameter when you compare Beryllonite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Beryllonite Vs Dravite 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 Beryllonite is Brittle, Conchoidal, Conchoidal, ConchoidalArthur Thomas and Gemstones (2009). Dravite fracture is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Irregular, Uneven and Uneven.
Beryllonite Vs Dravite Luster
A primary knowledge about Beryllonite vs Dravite 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. Beryllonite exhibits Adamantine, Pearly and Vitreous luster. Dravite, on other hand, exhibits Vitreous luster.