Zoisite Vs Blue John
Origin
Pakistan, Tanzania
-
Color
Brown, gray, Green, Blue, rose, Red
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
White, Colorless
-
Specific Gravity
3.20-3.50
3.00-3.25
Fracture
Uneven, Conchoidal, Even
-
Cleavage
Perfect {010} imperfect {100}
Perfect
Chemical Composition
Ca2Al3(SiO4)3(OH)
CaF 2Michael 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.
Transparent
Refractive Index
1.685-1.707
1.432-1.436
Crystal System
Orthorhombic
-
Birefringence
0.006-0.018
-9999
Clarity
Transparent
Transparent
Neurological
-
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Excellent
Excellent
Reproductive
Supports reproductive health
-
Psychology
Transformation
Harmony
Healing
Emotional healing
Emotional healing
Qualities Associated
-
Mental Clarity
Zoisite Vs Blue John Fracture
Fracture is an important parameter when you compare Zoisite and Blue John Physical Properties. It is necessary to understand the significance of these properties, before you compare Zoisite Vs Blue John 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.
Zoisite Vs Blue John Luster
A primary knowledge about Zoisite vs Blue John 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.