Phenakite Vs Blue John
Origin
USA, Switzerland, Tanzania, Madagascar, Russia, Sri Lanka
-
Color
Colorless, Yellow, pink, Red
White, Colorless, Blue, Red, Green, Yellow, Violet
Specific Gravity
2.90-2.98
3.00-3.25
Fracture
Conchoidal, ConchoidalWalter Schumann
-
Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
Perfect
Mohs Hardness
7.5-8
-9999
Chemical Composition
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Pleochroism
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
-
Transparency
-
Transparent
Refractive Index
1.650-1.695
1.432-1.436
Crystal System
Trigonal
-
Birefringence
0.016
-9999
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Neurological
-
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Excellent
Excellent
Psychology
Clarity
Harmony
Healing
Emotional healing
Emotional healing
Qualities Associated
Spiritual Activation
Mental Clarity
Phenakite Vs Blue John Fracture
Fracture is an important parameter when you compare Phenakite and Blue John Physical Properties. It is necessary to understand the significance of these properties, before you compare Phenakite 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 Phenakite is Conchoidal and ConchoidalWalter Schumann.
Phenakite Vs Blue John Luster
A primary knowledge about Phenakite 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. Phenakite exhibits Vitreous luster.