Gedrite Vs Verdelite
Origin
Southern and central Africa
Afghanistan, Brazil, Mozambique, Sri Lanka, USA
Color
Brown, Green, gray, White
Green, Brown
Specific Gravity
3.15-3.259
2.90-3.40
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Indiscernible
Mohs Hardness
5.5-6
7-7.5
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Pleochroism
Weak to moderate
Strong: dark green yellow
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.625-1.718
1.614-1.666
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
-
Birefringence
-9999
0.014-0.040
Clarity
Transparent
Transparent
Cardiovascular
-
Supports heart health
Psychology
Focus
Compassion
Healing
-
Emotional healing
Qualities Associated
Protection
Compassion
Gedrite Vs Verdelite Fracture
Fracture is an important parameter when you compare Gedrite and Verdelite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gedrite Vs Verdelite 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. Verdelite fracture is Conchoidal.
Gedrite Vs Verdelite Luster
A primary knowledge about Gedrite vs Verdelite 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.