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