Origin
Sri Lanka, India, Brazil
Southern and central Africa
Color
Green, Brown, Colorless, gray, Yellow
Violet
Specific Gravity
3.55-3.73
2.77-2.90
Fracture
Conchoidal, Uneven
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Cleavage
none
{0001} Perfect
Chemical Composition
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
(K,Na) 2(Li,Fe) 3(Zr,Ti,Fe)Si 12O 30Ulrich Henn and Claudio C.
Luster
Greasy, Vitreous
-
Refractive Index
1.730-1.760
1.606-1.608
Birefringence
0.020
0.002
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
OpaqueUlrich Henn and Claudio C. Milisenda
Reproductive
Helps in digestion and alleviates indigestion
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Healing
Physical healing
Emotional healing
Qualities Associated
Abundance
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