Gahnospinel Vs Alexandrite
Origin
Sri Lanka
Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Color: color change, from bluish green (daylight) to purple, red or brown (incandescent light), Hardness: 8, Refractive index: 1.74 1.77, Density: 3.68 3.80, Chemical composition: BeAl2O4, Crystal structure: orthorhombic, Origins: Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma
Streak
Not Available
Not Available
For which Rashi?
Sagittarius, Scorpio
Scorpio
Element of Planets
Not Available
Earth
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Projective
Projective, Receptive
Deities
Hephaestus
Not Available
Not to wear with
Not Available
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.65-4.55
3.69-3.81
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Not Available
Cleavage
None, but may exhibit slight parting
1,1 ; 3,2.
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
BeAl 2 O 4
Pleochroism
AbsentWalter Schumann
Not Available
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004)
Transparent, Transparent to nearly opaque
Refractive Index
1.735-1.790
1.739-1.770
Optic Character
Not Available
Biaxial/+
Crystal System
Isometric
Orthorhombic
Birefringence
Not Available
0.007-0.010
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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
Gahnospinel Vs Alexandrite Fracture
Fracture is an important parameter when you compare Gahnospinel and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gahnospinel Vs Alexandrite 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 Gahnospinel is ConchoidalArthur Thomas and Gemstones (2009).
Gahnospinel Vs Alexandrite Luster
A primary knowledge about Gahnospinel vs Alexandrite 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. Gahnospinel exhibits Vitreous luster. Alexandrite, on other hand, exhibits Vitreous luster.