Sugilite Vs Dravite
Origin
Canada, Southern and central Africa, Italy, Australia, India
Southern and central Africa
Color
Violet, Brownish, Yellow, Reddish, Pale pink
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
Planet
Mercury, Jupiter
-
Element of Planets
Water
-
Specific Gravity
2.69-2.79
3.03-3.18
Fracture
Conchoidal
Uneven, Irregular, Conchoidal
Cleavage
Poor on {0001}
{???} Indistinct
Mohs Hardness
5.5-6.5
7-7.5
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Pleochroism
Weak
Very strong: pale yellow colorless
Transparency
Translucent
Transparent
Refractive Index
1.607-1.612
1.614-1.666
Crystal System
Hexagonal
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.003
0.014-0.032
Clarity
Translucent
Transparent
Neurological
Enhances mental clarity and focus
-
Psychology
Spirituality
Self-acceptance
Healing
Emotional healing
Emotional healing
Qualities Associated
Spiritual Protection
Self-Exploration
Sugilite Vs Dravite Fracture
Fracture is an important parameter when you compare Sugilite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sugilite 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. Fracture observed in Sugilite is Conchoidal. Dravite fracture is Uneven, Irregular and Conchoidal.
Sugilite Vs Dravite Luster
A primary knowledge about Sugilite 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. Sugilite exhibits Vitreous luster. Dravite, on other hand, exhibits Vitreous luster.