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Anhydrite Vs Opal


Opal Vs Anhydrite


Astrology

Origin
Mexico  
Ethiopia  

Color
Colorless, Blue, Violet, White, Brown, rose, gray  
Yellow, White, Red, Brown, Blue  

Streak
White  
White  

For which Rashi?
-  
Cancer, Libra, Scorpio  

Planet
-  
Mercury  

Element of Planets
-  
Earth, Air, Water  

Energy
-  
-  

How to Wear?
  
  

Finger
-  
-  

Ring Metal
-  
-  

Deities
-  
Cupid  

Not to wear with
-  
-  

Powers
-  
Astral Projection, Psychicism  

Birthstone
  
  

Planetary
-  
-  

Talisman
-  
-  

Physical Properties

Tenacity
Brittle  
BrittleWalter Schumann  

Solubility
-  
hot salt water  

Durability
-  
-  

Specific Gravity
2.90-2.98  
1.98-2.25  

Fracture
Conchoidal  
Conchoidal  

Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.  
None  

Mohs Hardness
3.5  
5-6.5  

Chemical Composition
CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references  
SiO2 · nH2O  

Optical Properties

Luster
Pearly, Greasy  
Vitreous, Pearly  

Pleochroism
For violet varieties  
None  

Dispersion
0.01  
99+
0.01  
99+

Transparency
Transparent  
Transparent, Translucent, Transparent to translucent  

Refractive Index
1.570-1.614  
1.37-1.52  

Optic Character
-  
-  

Crystal System
Orthorhombic  
Trigonal  

Birefringence
0.042-0.044  
-9999  

Clarity
Transparent  
Transparent  

Benefits

Physical
  
  

Neurological
Enhances mental clarity and focus  
Enhances mental clarity and focus  

Cardiovascular
Supports heart health  
-  

Respiratory
Good  
-  

Reproductive
-  
-  

Digestive
-  
-  

Psychology
Calmness  
Creativity  

Healing
Emotional healing  
Emotional healing  

Qualities Associated
Acceptance  
Creativity  

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Anhydrite Vs Opal Fracture

Fracture is an important parameter when you compare Anhydrite and Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Anhydrite Vs Opal 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 Anhydrite is Conchoidal. Opal fracture is Conchoidal.

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Anhydrite Vs Opal Luster

A primary knowledge about Anhydrite vs Opal 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. Anhydrite exhibits Pearly and Greasy luster. Opal, on other hand, exhibits Vitreous and Pearly luster.

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