Dravite Vs Anthophyllite
Origin
Southern and central Africa
Southern and central Africa
Color
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
Brown, White, Greenish, gray, Green, Brownish
Specific Gravity
3.03-3.18
2.9-3.5
Fracture
Uneven, Irregular, Conchoidal
Conchoidal
Cleavage
{???} Indistinct
{110} Perfect, {???} Distinct, {???} Distinct
Mohs Hardness
7-7.5
5.5-6
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Very strong: pale yellow colorless
-
Transparency
Transparent
Transparent
Refractive Index
1.614-1.666
1.603-1.690
Optic Character
-
Biaxial/+
Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
0.014-0.032
-9999
Clarity
Transparent
Transparent
Neurological
-
Enhances brain function
Cardiovascular
-
Supports heart health
Psychology
Self-acceptance
Peace
Healing
Emotional healing
Emotional healing
Qualities Associated
Self-Exploration
Self-discovery
Dravite Vs Anthophyllite Fracture
Fracture is an important parameter when you compare Dravite and Anthophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dravite Vs Anthophyllite 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. Anthophyllite fracture is Conchoidal.
Dravite Vs Anthophyllite Luster
A primary knowledge about Dravite vs Anthophyllite 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. Anthophyllite, on other hand, exhibits Vitreous and Pearly luster.