Origin
Tanzania, Yellow, green, Yellow, green
  
Brazil, Southern and central Africa
  
Color
Blue
  
Blue, Green, Black
  
Streak
White, Colorless
  
White
  
For which Rashi?
Sagittarius, Pisces, Virgo, Sagittarius, Pisces, Virgo, Sagittarius, Pisces, Virgo
  
Gemini, Sagittarius, Gemini, Sagittarius, Gemini, Sagittarius
  
Planet
Not Available
  
Jupiter
  
Element of Planets
Air, Water, Earth
  
Not Available
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Receptive, Projective
  
Projective
  
Deities
Goddess
  
Gia
  
Not to wear with
Not Available
  
Not Available
  
Powers
Love, Healing
  
Not Available
  
Birthstone
  
  
Planetary
Not Available
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Hard
  
Not Available
  
Specific Gravity
3.35
  
3.04-3.17
  
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
  
Uneven, Uneven, Gemstones of the world (2001) More from other references
  
Cleavage
Perfect {010}, imperfect {100}
  
{001} Indistinct, {???} Indistinct
  
Mohs Hardness
6.5-7
  
5.5
  
Chemical Composition
Ca2Al3(SiO4)3(OH)
  
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
  
Luster
Vitreous
  
Not Available
  
Pleochroism
Present
  
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
  
Transparency
Transparent, Translucent, Transparent to translucent
  
Transparent, Translucent
  
Refractive Index
1.685-1.707
  
1.604-1.646
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Orthorhombic
  
monoclinic
  
Birefringence
0.006-0.018
  
0.031-0.036
  
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
  
Transparent
  
Physical
  
  
Neurological
Not Available
  
Not Available
  
Cardiovascular
Not Available
  
Not Available
  
Respiratory
Not Available
  
Not Available
  
Reproductive
Not Available
  
Not Available
  
Digestive
Not Available
  
Not Available
  
Psychology
Not Available
  
Not Available
  
Healing
Not Available
  
Not Available
  
Qualities Associated
Not Available
  
Not Available
  
Tanzanite Vs Lazulite Fracture
Fracture is an important parameter when you compare Tanzanite and Lazulite Physical Properties. It is necessary to understand the significance of these properties, before you compare Tanzanite Vs Lazulite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Tanzanite is Conchoidal, Gemstones of the world (2001), Uneven and UnevenWalter Schumann. Lazulite fracture is Gemstones of the world (2001) More from other references, Uneven and Uneven.
Tanzanite Vs Lazulite Luster
A primary knowledge about Tanzanite vs Lazulite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Tanzanite exhibits Vitreous luster.