Zoisite Vs Gahnite
Origin
Pakistan, Tanzania
Australia
Color
Brown, gray, Green, Blue, rose, Red
Blue, Green, Greenish, Black
Streak
White, Colorless
Grey, gray
Specific Gravity
3.20-3.50
4.00-4.62
Fracture
Uneven, Conchoidal, Even
Conchoidal, Uneven
Cleavage
Perfect {010} imperfect {100}
Indistinct parting on [111]
Chemical Composition
Ca2Al3(SiO4)3(OH)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Pleochroism
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
-
Transparency
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.
-
Refractive Index
1.685-1.707
1.790-1.818
Crystal System
Orthorhombic
cubic
Birefringence
0.006-0.018
-9999
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
-
Enhances mental clarity and focus
Cardiovascular
Supports heart health
-
Respiratory
Excellent
Aids in digestion and soothes the stomach
Reproductive
Supports reproductive health
-
Psychology
Transformation
Protection
Healing
Emotional healing
Emotional healing
Qualities Associated
-
Harmony
Zoisite Vs Gahnite Fracture
Fracture is an important parameter when you compare Zoisite and Gahnite Physical Properties. It is necessary to understand the significance of these properties, before you compare Zoisite Vs Gahnite 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 Zoisite is Uneven, Conchoidal and Even. Gahnite fracture is Conchoidal and Uneven.
Zoisite Vs Gahnite Luster
A primary knowledge about Zoisite vs Gahnite 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. Zoisite exhibits Vitreous luster. Gahnite, on other hand, exhibits Vitreous luster.