Dravite Vs Rubellite
Origin
Southern and central Africa
Afghanistan, Brazil, Madagascar, Mozambique, Southern and central Africa, Russia, Sri Lanka
Color
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
White, Colorless, Blue, Red, Green, Yellow, Violet
Specific Gravity
3.03-3.18
3.01-3.06
Fracture
Uneven, Irregular, Conchoidal
Conchoidal
Cleavage
{???} Indistinct
Indiscernible
Mohs Hardness
7-7.5
7-7.5
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
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
Very strong: pale yellow colorless
Strong: dark red pinkish-redHerve Nicolas Lazzarelli
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.614-1.666
1.614-1.666
Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
-
Birefringence
0.014-0.032
0.014-0.040
Clarity
Transparent
Transparent
Psychology
Self-acceptance
Passion
Healing
Emotional healing
Emotional healing
Qualities Associated
Self-Exploration
Passion
Dravite Vs Rubellite Fracture
Fracture is an important parameter when you compare Dravite and Rubellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dravite 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 Dravite is Uneven, Irregular and Conchoidal. Rubellite fracture is Conchoidal.
Dravite Vs Rubellite Luster
A primary knowledge about Dravite 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. Dravite exhibits Vitreous luster.