Lapis lazuli Vs Aragonite
Origin
Afghanistan
Canada, Pakistan
Color
Violet, Blue, White
Reddish, Greenish, White, Red, Yellow, Green, Grey, Blue, Brown, Colorless, White, gray, Reddish, orange
For which Rashi?
Sagittarius
Virgo, Capricorn, Virgo, Capricorn, Virgo, Capricorn
Element of Planets
Water
Earth
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Projective, Receptive
Not to wear with
Not Available
Not Available
Powers
Protection, Courage
Protection
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Brittle
Solubility
Not Available
Dilute acid
Durability
Not Available
Not Available
Specific Gravity
2.50-3.00
2.93-2.96
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
3,6
Distinct on {010}, imperfect {110} and {011}
Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Greasy
Vitreous, Resinous
Pleochroism
AbsentWalter Schumann
StrongArthur Thomas
Dispersion
None
Not Available
Transparency
Opaque
Transparent, Translucent
Refractive Index
1.500-1.670
1.525-1.686
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Orthorhombic
Birefringence
Not Available
0.155
Clarity
Gemstones of the world (2001)
Transparent
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 Aragonite Fracture
Fracture is an important parameter when you compare Lapis lazuli and Aragonite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli Vs Aragonite 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. Aragonite fracture is Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal.
Lapis lazuli Vs Aragonite Luster
A primary knowledge about Lapis lazuli vs Aragonite 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. Aragonite, on other hand, exhibits Resinous and Vitreous luster.