Origin
Southern and central Africa
Madagascar
Color
Green, Black, White, Grey, gray
Green
Specific Gravity
3.00
2.85-3.00
Fracture
Uneven, Splintery
Uneven
Cleavage
perfect along {110}.
Perfect
Chemical Composition
Ca 2(Mg,Fe) 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Luster
Vitreous
Vitreous, Pearly
Pleochroism
moderate
visible
Transparency
TransparentUlrich Henn and Claudio C. Milisenda
-
Refractive Index
1.613-1.628
1.578-1.639
Crystal System
monoclinic
Orthorhombic
Birefringence
0.0250-0.0270
0.037-0.039
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
-
Neurological
Aids in mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Supports heart health
-
Reproductive
Supports reproductive health
-
Psychology
Strength
Wisdom
Healing
Physical healing
Physical healing
Qualities Associated
Strength
Harmony