Zoisite Vs Anhydrite
Origin
Pakistan, Tanzania
Mexico
Color
Brown, gray, Green, Blue, rose, Red
Colorless, Blue, Violet, White, Brown, rose, gray
Streak
White, Colorless
White
Specific Gravity
3.20-3.50
2.90-2.98
Fracture
Uneven, Conchoidal, Even
Conchoidal
Cleavage
Perfect {010} imperfect {100}
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Chemical Composition
Ca2Al3(SiO4)3(OH)
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Vitreous
Pearly, Greasy
Pleochroism
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
For violet varieties
Transparency
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.
Transparent
Refractive Index
1.685-1.707
1.570-1.614
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.006-0.018
0.042-0.044
Clarity
Transparent
Transparent
Neurological
-
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Excellent
Good
Reproductive
Supports reproductive health
-
Psychology
Transformation
Calmness
Healing
Emotional healing
Emotional healing
Qualities Associated
-
Acceptance
Zoisite Vs Anhydrite Fracture
Fracture is an important parameter when you compare Zoisite and Anhydrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Zoisite Vs Anhydrite 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 Zoisite is Uneven, Conchoidal and Even. Anhydrite fracture is Conchoidal.
Zoisite Vs Anhydrite Luster
A primary knowledge about Zoisite vs Anhydrite 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. Zoisite exhibits Vitreous luster. Anhydrite, on other hand, exhibits Pearly and Greasy luster.