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Gahnospinel Vs Ettringite


Ettringite Vs Gahnospinel


Astrology

Origin
Sri Lanka  
Southern and central Africa  

Color
Blue  
Colorless, Yellow, White  

Streak
-  
White  

For which Rashi?
Sagittarius, Scorpio  
-  

Planet
Pluto  
-  

Element of Planets
-  
-  

Energy
-  
-  

How to Wear?
  
  

Finger
-  
-  

Ring Metal
-  
-  

Deities
Hephaestus  
-  

Not to wear with
-  
-  

Powers
-  
-  

Birthstone
  
  

Planetary
-  
-  

Talisman
-  
-  

Physical Properties

Tenacity
-  
-  

Solubility
-  
Partially soluble in water  

Durability
-  
-  

Specific Gravity
3.65-4.55  
1.77  

Fracture
Conchoidal  
-  

Cleavage
None, but may exhibit slight parting  
Perfect on {10 1 0}  

Mohs Hardness
7.5-8  
2-2.5  

Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)  
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)  

Optical Properties

Luster
Vitreous  
Vitreous  

Pleochroism
-  
-  

Dispersion
0.02  
99+
0.04  
36

Transparency
-  
Transparent, Translucent  

Refractive Index
1.735-1.790  
1.470-1.491  

Optic Character
-  
-  

Crystal System
Isometric  
Trigonal  

Birefringence
-9999  
0.021  

Clarity
TransparentUlrich Henn and Claudio C. Milisenda  
Transparent  

Benefits

Physical
  
  

Neurological
-  
-  

Cardiovascular
-  
-  

Respiratory
-  
-  

Reproductive
-  
-  

Digestive
-  
-  

Psychology
Empowerment  
Adaptability  

Healing
-  
Emotional healing  

Qualities Associated
Transformation  
Balance  

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Gahnospinel Vs Ettringite Fracture

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

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Gahnospinel Vs Ettringite Luster

A primary knowledge about Gahnospinel vs Ettringite 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. Gahnospinel exhibits Vitreous luster. Ettringite, on other hand, exhibits Vitreous luster.

Blue Gemstones

Blue Gemstones


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