Lapis lazuli Vs Spinel
Origin
Afghanistan
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Color
Violet, Blue, White
Blue, Violet, Colorless, Red, Green, Brown
For which Rashi?
Sagittarius
Sagittarius, Scorpio
Element of Planets
Water
Not Available
Energy
Receptive
Projective
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Protection, Courage
Money
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
none
Durability
Not Available
Not Available
Specific Gravity
2.50-3.00
3.64-3.66
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
3,6
None, but may exhibit slight parting
Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
MgAl2O4
Luster
Vitreous, Greasy
Vitreous
Pleochroism
AbsentWalter Schumann
Absent
Transparency
Opaque
Transparent, Translucent, Transparent to translucent
Refractive Index
1.500-1.670
1.73
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Isometric
Birefringence
Not Available
Not Available
Clarity
Gemstones of the world (2001)
TransparentUlrich Henn and Claudio C. Milisenda
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 Spinel Fracture
Fracture is an important parameter when you compare Lapis lazuli and Spinel Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli Vs Spinel 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 Uneven-Conchoidal, ConchoidalWalter Schumann and Gemstones of the world (2001). Spinel fracture is Conchoidal, Uneven, ConchoidalArthur Thomas and Gemstones (2009).
Lapis lazuli Vs Spinel Luster
A primary knowledge about Lapis lazuli vs Spinel 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 Vitreous and Greasy luster. Spinel, on other hand, exhibits Vitreous luster.