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Sard Vs Lapis lazuli


Lapis lazuli Vs Sard


Astrology

Origin
Southern and central Africa  
Afghanistan  

Color
White, Colorless, Blue, Red, Green, Yellow, Violet  
Violet, Blue, White  

Streak
Not Available  
Blue  

For which Rashi?
Not Available  
Sagittarius  

Planet
Not Available  
Venus  

Element of Planets
Not Available  
Water  

Energy
Not Available  
Receptive  

How to Wear?
  
  

Finger
Not Available  
Not Available  

Ring Metal
Not Available  
Not Available  

Deities
Not Available  
Venus  

Not to wear with
Not Available  
Not Available  

Powers
Not Available  
Protection, Courage  

Birthstone
  
  

Planetary
Not Available  
Not Available  

Talisman
Not Available  
Not Available  

Physical Properties

Tenacity
Not Available  
Not Available  

Solubility
Not Available  
Not Available  

Durability
Not Available  
Not Available  

Specific Gravity
2.58-2.63  
2.50-3.00  

Fracture
ConchoidalArthur Thomas, Gemstones (2009)  
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)  

Cleavage
Not Available  
3,6  

Mohs Hardness
6.5-7  
5.5  

Chemical Composition
SiO 2Ulrich Henn and Claudio C.  
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4  

Optical Properties

Luster
Waxy  
Vitreous, Greasy  

Pleochroism
AbsentWalter Schumann  
AbsentWalter Schumann  

Dispersion
None  
None  

Transparency
Translucent  
Opaque  

Refractive Index
1.535-1.539  
1.500-1.670  

Optic Character
Not Available  
Not Available  

Crystal System
Not Available  
Trigonal  

Birefringence
0.008-0.010  
Not Available  

Clarity
Translucent  
Gemstones of the world (2001)  

Benefits

Physical
  
  

Neurological
Not Available  
Not Available  

Cardiovascular
Not Available  
Not Available  

Respiratory
Not Available  
Not Available  

Reproductive
Not Available  
Not Available  

Digestive
Not Available  
Not Available  

Psychology
Not Available  
Not Available  

Healing
Not Available  
Not Available  

Qualities Associated
Not Available  
Not Available  

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Sard Vs Lapis lazuli Fracture

Fracture is an important parameter when you compare Sard and Lapis lazuli Physical Properties. It is necessary to understand the significance of these properties, before you compare Sard Vs Lapis lazuli 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 Sard is ConchoidalArthur Thomas and Gemstones (2009). Lapis lazuli fracture is Uneven-Conchoidal, ConchoidalWalter Schumann and Gemstones of the world (2001).

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Sard Vs Lapis lazuli Luster

A primary knowledge about Sard vs Lapis lazuli 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. Sard exhibits Waxy luster. Lapis lazuli, on other hand, exhibits Vitreous and Greasy luster.

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