Onyx Vs Tourmaline
Origin
Not Available
Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan
Color
White
Green, Blue, Yellow, Red, Brown, White, Colorless, pink
Streak
Not Available
White
For which Rashi?
Capricorn
Libra
Planet
Saturn
Venus, Mars
Element of Planets
Not Available
Water
Energy
Projective
Projective
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Protection
Love, Courage
Planetary
Not Available
Not Available
Talisman
Capricorn
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
2.85-3.35
Fracture
Not Available
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Indiscernible
Indistinct
Mohs Hardness
6.5-7
7-7.5
Chemical Composition
SiO2
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Pleochroism
Not Available
typically moderate to strong
Transparency
Translucent, Opaque, Translucent to opaque
Transparent, Translucent, Transparent to opaque
Refractive Index
1.530-1.543
1.614-1.666
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Trigonal
Birefringence
Not Available
0.014-0.040
Clarity
OpaqueHerve Nicolas Lazzarelli
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
Onyx Vs Tourmaline Fracture
Fracture is an important parameter when you compare Onyx and Tourmaline Physical Properties. It is necessary to understand the significance of these properties, before you compare Onyx Vs Tourmaline 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. Tourmaline fracture is Uneven, Conchoidal, ConchoidalArthur Thomas and Gemstones (2009).
Onyx Vs Tourmaline Luster
A primary knowledge about Onyx vs Tourmaline 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. Onyx exhibits Vitreous luster. Tourmaline, on other hand, exhibits Vitreous luster.
