Tanzanite Vs Petalite
Origin
Tanzania, Yellow, green
Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia
Color
Blue
Colorless, gray, Yellow, White
Streak
White, Colorless
Colorless
For which Rashi?
Sagittarius, Pisces, Virgo
Not Available
Planet
Not Available
Not Available
Element of Planets
Air, Water, Earth
Not Available
Energy
Receptive, Projective
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Goddess
Not Available
Not to wear with
Not Available
Not Available
Powers
Love, Healing
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble
Durability
Hard
Not Available
Specific Gravity
3.35
2.40
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Cleavage
Perfect {010}, imperfect {100}
Perfect on {001}, poor on {201} with 38.5° angle between the two
Mohs Hardness
6.5-7
6-6.5
Chemical Composition
Ca2Al3(SiO4)3(OH)
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Present
AbsentWalter Schumann
Transparency
Transparent, Translucent, Transparent to translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.685-1.707
1.502-1.523
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
monoclinic
Birefringence
0.006-0.018
0.012-0.016
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda
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 Petalite Fracture
Fracture is an important parameter when you compare Tanzanite and Petalite Physical Properties. It is necessary to understand the significance of these properties, before you compare Tanzanite Vs Petalite 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 Uneven, Conchoidal, UnevenWalter Schumann and Gemstones of the world (2001). Petalite fracture is Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle and Conchoidal.
Tanzanite Vs Petalite Luster
A primary knowledge about Tanzanite vs Petalite 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. Petalite, on other hand, exhibits Vitreous and Pearly luster.