Riebeckite Vs Gedrite
Origin
-
Southern and central Africa
Color
Black, Blue, Yellow, Green
Brown, Green, gray, White
Streak
Grey, Greenish, Brown
gray, White
Specific Gravity
3.28-3.44
3.15-3.259
Fracture
Uneven, Splintery
-
Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Mohs Hardness
5.0-6.0
5.5-6
Chemical Composition
Na2Fe2+3Fe3+2Si8O22(OH)2
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous, Silky
Vitreous
Pleochroism
X = blue
Weak to moderate
Transparency
-
Transparent
Refractive Index
1.680-1.698
1.625-1.718
Crystal System
monoclinic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
0.005-0.008
-9999
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
-
Psychology
Empowerment
Focus
Healing
Emotional healing
-
Qualities Associated
Clear Thinking
Protection
Riebeckite Vs Gedrite Fracture
Fracture is an important parameter when you compare Riebeckite and Gedrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Riebeckite 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 Riebeckite is Uneven and Splintery.
Riebeckite Vs Gedrite Luster
A primary knowledge about Riebeckite 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. Riebeckite exhibits Vitreous and Silky luster. Gedrite, on other hand, exhibits Vitreous luster.