Origin
Southern and central Africa
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Color
Brown, Brownish, White, Colorless, Yellow
Blue, Violet, Colorless, Red, Green, Brown
For which Rashi?
Not Available
Sagittarius, Scorpio, Sagittarius, Scorpio, Sagittarius, Scorpio
Planet
Not Available
Pluto
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Projective
Deities
Not Available
Hephaestus
Not to wear with
Not Available
Not Available
Powers
Not Available
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
1.58-1.60
3.64-3.66
Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{011} Imperfect
None, but may exhibit slight parting
Chemical Composition
Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
MgAl2O4
Pleochroism
Weak: yellowish brown yellowAnthony et al
Absent
Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent, Transparent to translucent
Refractive Index
1.509-1.541
1.73
Optic Character
Not Available
Not Available
Crystal System
Not Available
Isometric
Birefringence
0.030
Not Available
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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
Mellite Vs Spinel Fracture
Fracture is an important parameter when you compare Mellite and Spinel Physical Properties. It is necessary to understand the significance of these properties, before you compare Mellite 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 Mellite is Brittle, Conchoidal, ConchoidalAnthony et al, ConchoidalAnthony et al, Handbook of mineralogy (2001) and Handbook of mineralogy (2001). Spinel fracture is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven.
Mellite Vs Spinel Luster
A primary knowledge about Mellite 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. Mellite exhibits Vitreous luster. Spinel, on other hand, exhibits Vitreous luster.