Origin
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Southern and central Africa
Color
Blue, Violet, Colorless, Red, Green, Brown
Brown, Green, gray, White
For which Rashi?
Sagittarius, Scorpio
-
Specific Gravity
3.64-3.66
3.15-3.259
Fracture
Conchoidal, Uneven
-
Cleavage
None, but may exhibit slight parting
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Chemical Composition
MgAl2O4
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Pleochroism
Absent
Weak to moderate
Transparency
Transparent, Translucent, Transparent to translucent
Transparent
Refractive Index
1.73
1.625-1.718
Crystal System
Isometric
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
-9999
-9999
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Psychology
Revitalization
Focus
Healing
Emotional healing
-
Qualities Associated
Vitality
Protection
Spinel Vs Gedrite Fracture
Fracture is an important parameter when you compare Spinel and Gedrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Spinel Vs Gedrite 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 Spinel is Conchoidal and Uneven.
Spinel Vs Gedrite Luster
A primary knowledge about Spinel vs Gedrite 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. Spinel exhibits Vitreous luster. Gedrite, on other hand, exhibits Vitreous luster.