Bytownite Vs Rubellite
Origin
Canada, Southern and central Africa, Australia
Afghanistan, Brazil, Madagascar, Mozambique, Southern and central Africa, Russia, Sri Lanka
Color
Colorless, White, gray
White, Colorless, Blue, Red, Green, Yellow, Violet
Specific Gravity
2.72-2.75
3.01-3.06
Fracture
Uneven
Conchoidal
Cleavage
Perfect on [001], good on [010], imperfect on [110]
Indiscernible
Mohs Hardness
6-6.5
7-7.5
Chemical Composition
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
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.
Luster
Vitreous, Pearly
-
Pleochroism
colorless.
Strong: dark red pinkish-redHerve Nicolas Lazzarelli
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.561-1.583
1.614-1.666
Crystal System
Triclinic
-
Birefringence
0.010-0.011
0.014-0.040
Clarity
Transparent
Transparent
Respiratory
Poor
Excellent
Psychology
Clarity
Passion
Healing
Emotional healing
Emotional healing
Qualities Associated
Clarity
Passion
Bytownite Vs Rubellite Fracture
Fracture is an important parameter when you compare Bytownite and Rubellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Bytownite 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 Bytownite is Uneven. Rubellite fracture is Conchoidal.
Bytownite Vs Rubellite Luster
A primary knowledge about Bytownite 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. Bytownite exhibits Vitreous and Pearly luster.