Augite Vs Dravite
Origin
USA, Mexico
Southern and central Africa
Color
Green, Brown, Greenish, Black
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
Streak
Greenish, gray
Colorless
Specific Gravity
3.19-3.56
3.03-3.18
Fracture
Uneven, Conchoidal
Uneven, Irregular, Conchoidal
Cleavage
{110} Perfect, {010} Indistinct
{???} Indistinct
Mohs Hardness
5.5-6
7-7.5
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
Vitreous, Resinous
Vitreous
Pleochroism
Pale green
Very strong: pale yellow colorless
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.671-1.774
1.614-1.666
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
-9999
0.014-0.032
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
-
Psychology
Courage
Self-acceptance
Healing
Emotional healing
Emotional healing
Qualities Associated
Grounding
Self-Exploration
Augite Vs Dravite Fracture
Fracture is an important parameter when you compare Augite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Augite 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 Augite is Uneven and Conchoidal. Dravite fracture is Uneven, Irregular and Conchoidal.
Augite Vs Dravite Luster
A primary knowledge about Augite 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. Augite exhibits Vitreous and Resinous luster. Dravite, on other hand, exhibits Vitreous luster.