Origin
Brazil, Madagascar, Russia, USA, Mexico, Pakistan, brown, Yellow, Orange, Brazil, Sri Lanka, Pakistan, Russia, brown, Yellow, Orange, Brazil, Sri Lanka, Pakistan, Russia
Mexico
Color
Yellow, Blue, Green, Red, White, Colorless, Blue, Red, Green, Yellow, pink, Brown
Blue, Blue, Black
Streak
White
Grey, Black, gray
For which Rashi?
Sagittarius
Not Available
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Projective
Not Available
Not to wear with
Not Available
Not Available
Powers
Healing, Love, Money
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Flexible
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
4.6-4.76
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
[001] Perfect
Perfect on {0001}
Mohs Hardness
8
Not Available
Chemical Composition
Al2SiO4(F,OH)2
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Transparency
Transparent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
Refractive Index
1.606-1.644
1.45-2.62
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Hexagonal
Birefringence
0.008-0.011
Not Available
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
OpaqueAnthony et al
Neurological
Not Available
Not Available
Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
Not Available
Healing
Not Available
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Qualities Associated
Not Available
Not Available
Topaz Vs Covellite Fracture
Fracture is an important parameter when you compare Topaz and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Topaz Vs Covellite 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 Topaz is Brittle, ConchoidalArthur Thomas, Gemstones (2009), Subconchoidal and Uneven. Covellite fracture is Brittle, Gemstones (2009), Gemstones (2009), Metallic and UnevenArthur Thomas.
Topaz Vs Covellite Luster
A primary knowledge about Topaz vs Covellite 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. Topaz exhibits Vitreous luster. Covellite, on other hand, exhibits Resinous luster.