Origin
Ethiopia
Southern and central Africa
Color
Yellow, White, Red, Brown, Blue
Black, Reddish, gray, Red
Streak
White
Black, Brown, Reddish, Red
For which Rashi?
Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio
Aries, Aquarius, Aries, Aquarius, Aries, Aquarius
Element of Planets
Earth, Air, Water
Not Available
Energy
Projective, Receptive
Projective
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Astral Projection, Psychicism
Healing
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
BrittleWalter Schumann
Brittle
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
5.00-5.30
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Cleavage
None
None, may show partings on {0001} and {10 1 1}
Chemical Composition
SiO2 · nH2O
Fe 2O 3Arthur Thomas , Gemstones (2009)
Luster
Vitreous, Pearly
Not Available
Pleochroism
None
O = brownish red; E = yellowish red
Dispersion
None
Not Available
Transparency
Transparent, Translucent, Transparent to translucent
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Refractive Index
1.37-1.52
2.690-3.220
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Trigonal
Birefringence
Not Available
0.280
Clarity
Transparent
OpaqueHerve Nicolas Lazzarelli
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 Hematite Fracture
Fracture is an important parameter when you compare Opal and Hematite Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal Vs Hematite 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. Hematite fracture is Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal and Brittle.
Opal Vs Hematite Luster
A primary knowledge about Opal vs Hematite 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.