Black Opal Vs Agate
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Yellow, Red, White, White, Colorless, Blue, Red, Green, Yellow, pink, Black, Blue, Brown
Streak
Not Available
White
For which Rashi?
Not Available
Gemini
Planet
Not Available
Not Available
Element of Planets
Not Available
Water
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Projective
Deities
Not Available
Bragi
Not to wear with
Not Available
Not Available
Powers
Not Available
Courage, Love, Healing, Protection
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
2.60-2.64
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Cleavage
Not Available
Indiscernible
Mohs Hardness
6-6.5
6.5-7
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
SiO2
Luster
Not Available
Vitreous
Pleochroism
AbsentWalter Schumann
Absent
Transparency
Transparent, Translucent
Translucent
Refractive Index
1.370-1.470
1.530-1.543
Optic Character
Not Available
Not Available
Crystal System
Not Available
Trigonal
Birefringence
Not Available
0.004
Clarity
Transparent
Translucent
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
Black Opal Vs Agate Fracture
Fracture is an important parameter when you compare Black Opal and Agate Physical Properties. It is necessary to understand the significance of these properties, before you compare Black Opal Vs Agate 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 Black Opal is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009). Agate fracture is Conchoidal, Gemstones of the world (2001) and UnevenWalter Schumann.
Black Opal Vs Agate Luster
A primary knowledge about Black Opal vs Agate 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. Agate, on other hand, exhibits Vitreous luster.