Origin
Madagascar
Southern and central Africa, Zimbabwe, South Africa
Streak
White
Greenish, White
For which Rashi?
Not Available
Virgo
Planet
Not Available
Not Available
Element of Planets
Not Available
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Energy
Not Available
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Finger
Not Available
Not Available
Ring Metal
Not Available
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Deities
Not Available
Gaia, Goddess, The All
Not to wear with
Not Available
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Powers
Not Available
Healing
Planetary
Not Available
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Talisman
Not Available
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Tenacity
Not Available
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Solubility
Not Available
Decomposed by acids
Durability
Not Available
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Specific Gravity
2.85-3.00
2.96
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Uneven
Not Available
Cleavage
Perfect
Perfect on {010}
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Luster
Vitreous, Pearly
Vitreous
Pleochroism
visible
X: very light bluish green; Y and Z: brilliant bluish green
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004) More from other references
Not Available
Refractive Index
1.578-1.639
1.550
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Triclinic
Birefringence
0.037-0.039
0.091
Clarity
Gemmological Tables (2004) More from other references
Not Available
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
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Qualities Associated
Not Available
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