Origin
Ethiopia
Southern and central Africa
Color
Yellow, White, Red, Brown, Blue
Brown, Brown, Green, Green, gray, White
Streak
White
gray, White, gray, White
For which Rashi?
Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio
Not Available
Planet
Mercury
Not Available
Element of Planets
Earth, Air, Water
Not Available
Energy
Projective, Receptive
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Cupid
Not Available
Not to wear with
Not Available
Not Available
Powers
Astral Projection, Psychicism
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
3.15-3.259
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Not Available
Cleavage
None
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Mohs Hardness
5-6.5
5.5-6
Chemical Composition
SiO2 · nH2O
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous, Pearly
Fibrous, Vitreous
Pleochroism
None
Weak to moderate
Dispersion
None
Not Available
Transparency
Transparent, Translucent, Transparent to translucent
Transparent
Refractive Index
1.37-1.52
1.625-1.718
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
Not Available
Not Available
Clarity
Transparent
Transparent
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
Not Available
Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
Opal Vs Gedrite Fracture
Fracture is an important parameter when you compare Opal and Gedrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal 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 Opal is Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references and Brittle.
Opal Vs Gedrite Luster
A primary knowledge about Opal 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. Opal exhibits Vitreous and Pearly luster. Gedrite, on other hand, exhibits Fibrous and Vitreous luster.
