Precious Opal Vs Sellaite
Color
Yellow, Green, Blue
Colorless, White
Streak
Not Available
White
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
3.14-3.16
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Cleavage
Not Available
Perfect on {010} and {110}
Mohs Hardness
5-6.5
5-5.5
Chemical Composition
SiO 2 · nH 2OGemdat.org , Management Team (2012)
MgF 2Ulrich Henn and Claudio C.
Luster
Not Available
Vitreous
Pleochroism
AbsentWalter Schumann
Not Available
Dispersion
None
Not Available
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.370-1.470
1.378-1.390
Optic Character
Not Available
Not Available
Crystal System
Not Available
tetragonal
Birefringence
Not Available
0.012
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
Precious Opal Vs Sellaite Fracture
Fracture is an important parameter when you compare Precious Opal and Sellaite Physical Properties. It is necessary to understand the significance of these properties, before you compare Precious Opal Vs Sellaite 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 Precious Opal is Conchoidal, Conchoidal and Gemstones of the world (2001) More from other references. Sellaite fracture is Brittle, Conchoidal, ConchoidalAnthony et al and Handbook of mineralogy (2001).
Precious Opal Vs Sellaite Luster
A primary knowledge about Precious Opal vs Sellaite 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. Sellaite, on other hand, exhibits Vitreous luster.