Origin
Italy, Russia
China
Color
Colorless, Green, Black, Brown, Red, Greenish, Yellow, gray
Red, Colorless
Specific Gravity
3.70-4.10
3.50
Fracture
Conchoidal, Uneven
Uneven, Conchoidal
Chemical Composition
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Mn 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Adamantine, Resinous
Vitreous
Transparency
Transparent
-
Refractive Index
1.88-1.94
1.735-1.745
Crystal System
cubic
Orthorhombic
Birefringence
0.057
0.012
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
Supports heart health
Digestive
-
Promotes relaxation and reduces stress
Healing
Physical healing
-
Qualities Associated
Empowerment
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