Prehnite Vs Rubellite
Origin
Australia, Southern and central Africa, France
Afghanistan, Brazil, Madagascar, Mozambique, Southern and central Africa, Russia, Sri Lanka
Color
Green, Colorless, gray, Yellow, White
White, Colorless, Blue, Red, Green, Yellow, Violet
Element of Planets
Earth
-
Specific Gravity
2.80-2.95
3.01-3.06
Fracture
Uneven
Conchoidal
Cleavage
Distinct on [001]
Indiscernible
Mohs Hardness
6-6.5
7-7.5
Chemical Composition
Ca2Al2Si3O12(OH)
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Pleochroism
-
Strong: dark red pinkish-redHerve Nicolas Lazzarelli
Transparency
Translucent
Transparent, Translucent
Refractive Index
1.611-1.673
1.614-1.666
Crystal System
Orthorhombic
-
Birefringence
0.021-0.033
0.014-0.040
Clarity
TranslucentHerve Nicolas Lazzarelli
Transparent
Neurological
Enhances mental clarity and focus
-
Respiratory
Good
Excellent
Psychology
Harmony
Passion
Healing
Physical healing
Emotional healing
Qualities Associated
Harmony
Passion
Prehnite Vs Rubellite Fracture
Fracture is an important parameter when you compare Prehnite and Rubellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Prehnite Vs Rubellite 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 Prehnite is Uneven. Rubellite fracture is Conchoidal.
Prehnite Vs Rubellite Luster
A primary knowledge about Prehnite vs Rubellite 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. Prehnite exhibits Vitreous luster.