Color
Red, Reddish, Violet, Blue, Green, Colorless, pink
Brownish, Black
Specific Gravity
2.74-2.76
3.26
Cleavage
{010} Perfect, {001} Distinct
None
Mohs Hardness
3.5-4
-9999
Chemical Composition
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Pleochroism
Pale rose-red carmine-red colorlessAnthony et al
Strong: yellow-brown
Transparency
Transparent
Translucent
Refractive Index
1.692-1.739
-9999
Birefringence
0.240
-9999
Clarity
Transparent
Translucent
Psychology
Heart opening
-
Healing
Emotional healing
-
Qualities Associated
Heart Healing
Protection