Origin
Sri Lanka
Mozambique, Southern and central Africa
Color
Red, Brown, Black
Yellow, Reddish, Brown, Greenish
Specific Gravity
2.97-3.14
-9999
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
{1011} Indistinct
{???} Perfect
Mohs Hardness
-9999
5.5-6
Chemical Composition
Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
SbTaO 4Ulrich Henn and Claudio C.
Luster
Vitreous
Adamantine
Pleochroism
Pale yellow colorlessAnthony et al
-
Transparency
Transparent
-
Refractive Index
1.614-1.666
2.37-2.45
Birefringence
0.014-0.032
0.08
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Cardiovascular
Supports heart health
-
Digestive
-
Soothes the digestive system
Psychology
Empowerment
Creativity
Healing
Emotional healing
Physical healing
Qualities Associated
Empowerment
Creativity