Alexandrite Vs Dravite
Origin
Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Origins: Russia
Southern and central Africa
Color
Green
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
For which Rashi?
Scorpio
-
Element of Planets
Earth
-
Specific Gravity
3.69-3.81
3.03-3.18
Fracture
-
Uneven, Irregular, Conchoidal
Cleavage
1,1 ; 3,2.
{???} Indistinct
Chemical Composition
BeAl 2 O 4
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Pleochroism
-
Very strong: pale yellow colorless
Transparency
Transparent, Transparent to nearly opaque
Transparent
Refractive Index
1.739-1.770
1.614-1.666
Optic Character
Biaxial/+
-
Crystal System
Orthorhombic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.007-0.010
0.014-0.032
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Aids in grounding and protection
-
Reproductive
Supports reproductive health
-
Psychology
Transformation
Self-acceptance
Healing
Emotional healing
Emotional healing
Qualities Associated
Transformation
Self-Exploration
Alexandrite Vs Dravite Fracture
Fracture is an important parameter when you compare Alexandrite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Alexandrite Vs Dravite 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. Dravite fracture is Uneven, Irregular and Conchoidal.
Alexandrite Vs Dravite Luster
A primary knowledge about Alexandrite vs Dravite 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. Alexandrite exhibits Vitreous luster. Dravite, on other hand, exhibits Vitreous luster.