1 Astrology
1.2 Origin
Spain, Southern and central Africa
Brazil
1.3 Color
White, White, gray, Reddish, Brownish, gray
Colorless, White, Greenish
1.2 Streak
1.2 For which Rashi?
Not Available
Not Available
1.6 Planet
Not Available
Not Available
1.10 Element of Planets
Not Available
Not Available
1.13 Energy
Not Available
Not Available
1.17 How to Wear?
1.18.1 Finger
Not Available
Not Available
1.19.2 Ring Metal
Not Available
Not Available
1.3 Deities
Not Available
Not Available
1.7 Not to wear with
Not Available
Not Available
1.11 Powers
Not Available
Not Available
1.16 Birthstone
1.16.1 Planetary
Not Available
Not Available
1.21.1 Talisman
Not Available
Not Available
3 Physical Properties
3.1 Tenacity
3.5 Solubility
Poorly soluble in dilute HCl
Not Available
4.3 Durability
Not Available
Not Available
5.4 Specific Gravity
2.80-2.952.52-2.60
1
7.18
6.12 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
6.15 Cleavage
Perfect on {10 1 1}, rhombohedral cleavage
{0001} Imperfect, {1120} Imperfect
6.16 Mohs Hardness
8.5 Chemical Composition
CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
10 Optical Properties
10.1 Luster
Vitreous, Pearly
Not Available
10.2 Pleochroism
NilArthur Thomas
Not Available
10.5 Dispersion
11.10 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
11.13 Refractive Index
1.498-1.6811.529-1.560
1
3.25
11.26 Optic Character
Not Available
Not Available
11.27 Crystal System
11.28 Birefringence
0.179-0.1810.000-0.011
0
0.296
14.6 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
16 Benefits
16.1 Physical
16.1.1 Neurological
Not Available
Not Available
16.1.3 Cardiovascular
Not Available
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16.1.4 Respiratory
Not Available
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16.1.6 Reproductive
Not Available
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16.1.8 Digestive
Not Available
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16.2 Psychology
Not Available
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16.4 Healing
Not Available
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16.6 Qualities Associated
Not Available
Not Available