Gedrite Vs Andradite
Origin
Southern and central Africa
Italy, Russia
Color
Brown, Green, gray, White
Colorless, Green, Black, Brown, Red, Greenish, Yellow, gray
Specific Gravity
3.15-3.259
3.70-4.10
Fracture
-
Conchoidal, Uneven
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
none
Mohs Hardness
5.5-6
6.5-7
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Luster
Vitreous
Adamantine, Resinous
Pleochroism
Weak to moderate
-
Transparency
Transparent
Transparent
Refractive Index
1.625-1.718
1.88-1.94
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
cubic
Birefringence
-9999
0.057
Clarity
Transparent
Transparent
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Psychology
Focus
Positivity
Healing
-
Physical healing
Qualities Associated
Protection
Empowerment
Gedrite Vs Andradite Fracture
Fracture is an important parameter when you compare Gedrite and Andradite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gedrite Vs Andradite 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. Andradite fracture is Conchoidal and Uneven.
Gedrite Vs Andradite Luster
A primary knowledge about Gedrite vs Andradite 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. Gedrite exhibits Vitreous luster. Andradite, on other hand, exhibits Adamantine and Resinous luster.