Lapis lazuli Vs Sugilite
Origin
Afghanistan
Canada, Southern and central Africa, Italy, Australia, India
Color
Violet, Blue, White
Violet, Brownish, Yellow, Reddish, Pale pink
For which Rashi?
Sagittarius
Virgo
Planet
Venus
Mercury, Jupiter
Element of Planets
Water
Water
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Receptive
Not to wear with
Not Available
Not Available
Powers
Protection, Courage
Not Available
Planetary
Not Available
All
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.50-3.00
2.69-2.79
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
3,6
Poor on {0001}
Mohs Hardness
5.5
5.5-6.5
Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Greasy
Vitreous
Pleochroism
AbsentWalter Schumann
Weak
Dispersion
None
Not Available
Transparency
Opaque
Translucent
Refractive Index
1.500-1.670
1.607-1.612
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Hexagonal
Birefringence
Not Available
0.003
Clarity
Gemstones of the world (2001)
Translucent
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
Lapis lazuli Vs Sugilite Fracture
Fracture is an important parameter when you compare Lapis lazuli and Sugilite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli Vs Sugilite 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 Lapis lazuli is ConchoidalWalter Schumann, Gemstones of the world (2001) and Uneven-Conchoidal. Sugilite fracture is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009).
Lapis lazuli Vs Sugilite Luster
A primary knowledge about Lapis lazuli vs Sugilite 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. Lapis lazuli exhibits Greasy and Vitreous luster. Sugilite, on other hand, exhibits Vitreous luster.