Origin
Southern and central Africa
Brazil, Southern and central Africa
Color
Black, Reddish, gray, Red
Blue, Green, Black
Streak
Black, Brown, Reddish, Red
White
For which Rashi?
Aries, Aquarius
Gemini, Sagittarius
Planet
Saturn
Jupiter
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Mars
-
Not to wear with
-
-
Powers
Healing
-
Birthstone
Planetary
-
Talisman
-
-
Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.00-5.303.04-3.17
1
7.18
👆🏻
Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
Uneven
Cleavage
None, may show partings on {0001} and {10 1 1}
{001} Indistinct, {???} Indistinct
Mohs Hardness
65.5
2
10
👆🏻
Chemical Composition
Fe 2O 3Arthur Thomas , Gemstones (2009)
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Luster
-
-
Pleochroism
O = brownish red; E = yellowish red
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Dispersion
0.050.01
0.005
1
👆🏻
Transparency
OpaqueHerve Nicolas Lazzarelli
Transparent, Translucent
Refractive Index
2.690-3.2201.604-1.646
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal
monoclinic
Birefringence
0.2800.031-0.036
0
0.296
👆🏻
Clarity
OpaqueHerve Nicolas Lazzarelli
Transparent
Physical
Neurological
-
Balances digestive system and reduces bloating
Cardiovascular
Supports heart health
-
Respiratory
Good
Excellent
Reproductive
-
-
Digestive
-
Supports digestive health
Psychology
Grounding
Clarity
Healing
Physical healing
Emotional healing
Qualities Associated
Grounding
Psychic Abilities