Grossular Vs Gedrite
Origin
Sri Lanka, India, Brazil
Southern and central Africa
Color
Green, Brown, Colorless, gray, Yellow
Brown, Green, gray, White
Streak
Brownish, White
gray, White
Specific Gravity
3.55-3.73
3.15-3.259
Fracture
Conchoidal, Uneven
-
Cleavage
none
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Mohs Hardness
7-7.5
5.5-6
Chemical Composition
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Greasy, Vitreous
Vitreous
Pleochroism
None
Weak to moderate
Transparency
-
Transparent
Refractive Index
1.730-1.760
1.625-1.718
Crystal System
cubic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
0.020
-9999
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Reproductive
Helps in digestion and alleviates indigestion
-
Psychology
Abundance
Focus
Healing
Physical healing
-
Qualities Associated
Abundance
Protection
Grossular Vs Gedrite Fracture
Fracture is an important parameter when you compare Grossular and Gedrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Grossular 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 Grossular is Conchoidal and Uneven.
Grossular Vs Gedrite Luster
A primary knowledge about Grossular 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. Grossular exhibits Greasy and Vitreous luster. Gedrite, on other hand, exhibits Vitreous luster.