1 Astrology
1.2 Origin
Italy
Brazil, Southern and central Africa
1.4 Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Blue, Green, Black
1.1 Streak
1.5 For which Rashi?
Not Available
Gemini, Sagittarius, Gemini, Sagittarius, Gemini, Sagittarius
1.7 Planet
1.13 Element of Planets
Not Available
Not Available
1.19 Energy
1.23 How to Wear?
1.23.0 Finger
Not Available
Not Available
1.26.1 Ring Metal
Not Available
Not Available
1.29 Deities
1.32 Not to wear with
Not Available
Not Available
3.2 Powers
Not Available
Not Available
3.5 Birthstone
3.5.1 Planetary
Not Available
Not Available
3.11.1 Talisman
Not Available
Not Available
4 Physical Properties
4.1 Tenacity
Not Available
Not Available
4.4 Solubility
Not Available
Not Available
5.2 Durability
Not Available
Not Available
6.3 Specific Gravity
3.22-3.403.04-3.17
1
7.18
6.13 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Uneven, Gemstones of the world (2001) More from other references
6.15 Cleavage
Not Available
{001} Indistinct, {???} Indistinct
6.17 Mohs Hardness
7.4 Chemical Composition
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
8 Optical Properties
8.1 Luster
Not Available
Not Available
8.2 Pleochroism
Not Available
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
9.1 Dispersion
11.17 Transparency
Translucent
Transparent, Translucent
11.18 Refractive Index
1.668-1.7031.604-1.646
1
3.25
13.5 Optic Character
Not Available
Not Available
13.6 Crystal System
13.7 Birefringence
0.024-0.0300.031-0.036
0
0.296
15.5 Clarity
16 Benefits
16.1 Physical
16.1.1 Neurological
Not Available
Not Available
16.1.2 Cardiovascular
Not Available
Not Available
16.1.3 Respiratory
Not Available
Not Available
16.1.4 Reproductive
Not Available
Not Available
16.1.5 Digestive
Not Available
Not Available
16.2 Psychology
Not Available
Not Available
16.3 Healing
Not Available
Not Available
16.4 Qualities Associated
Not Available
Not Available