Dravite Vs Crocoite
Origin
Southern and central Africa
Australia, Southern and central Africa
Color
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
Red, Yellow, orange
Streak
Colorless
yellowish orange
Specific Gravity
3.03-3.18
5.90-6.10
Fracture
Uneven, Irregular, Conchoidal
Conchoidal
Cleavage
{???} Indistinct
{110} Distinct, {001} Indistinct, {100} Indistinct
Mohs Hardness
7-7.5
2.5-3
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Adamantine
Pleochroism
Very strong: pale yellow colorless
Distinctly trichroic
Transparency
Transparent
Transparent
Refractive Index
1.614-1.666
2.31-2.66
Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
Birefringence
0.014-0.032
-9999
Clarity
Transparent
Transparent
Cardiovascular
-
Supports heart health
Psychology
Self-acceptance
Passion
Healing
Emotional healing
Physical healing
Qualities Associated
Self-Exploration
Passion
Dravite Vs Crocoite Fracture
Fracture is an important parameter when you compare Dravite and Crocoite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dravite Vs Crocoite 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. Crocoite fracture is Conchoidal.
Dravite Vs Crocoite Luster
A primary knowledge about Dravite vs Crocoite 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. Crocoite, on other hand, exhibits Adamantine luster.