Opal Vs Coral
Origin
Ethiopia
Southern and central Africa, Orange, blue
Color
Yellow, White, Red, Brown, Blue
White, Blue
Streak
White
Not Available
For which Rashi?
Cancer, Libra, Scorpio
Pisces
Element of Planets
Earth, Air, Water
Water
Energy
Projective, Receptive
Receptive
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Astral Projection, Psychicism
Healing, Protection
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
2.60-2.70
Fracture
Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Irregular, Gemstones of the world (2001)
Cleavage
None
Not Available
Chemical Composition
SiO2 · nH2O
CaCO 3Ulrich Henn and Claudio C.
Luster
Vitreous, Pearly
Not Available
Pleochroism
None
AbsentWalter Schumann
Transparency
Transparent, Translucent, Transparent to translucent
Translucent
Refractive Index
1.37-1.52
1.486-1.658
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Trigonal
Birefringence
Not Available
0.160-0.172
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
Opal Vs Coral Fracture
Fracture is an important parameter when you compare Opal and Coral Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal Vs Coral 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, Gemstones of the world (2001) More from other references and Brittle. Coral fracture is Irregular and Gemstones of the world (2001).
Opal Vs Coral Luster
A primary knowledge about Opal vs Coral 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.