Origin
USA
Brazil, Madagascar, Russia, USA, Mexico, Pakistan, brown, Yellow, Orange, Brazil, Sri Lanka, Pakistan, Russia, brown, Yellow, Orange, Brazil, Sri Lanka, Pakistan, Russia
Color
Black, Red, Brown
Yellow, Blue, Green, Red, White, Colorless, Blue, Red, Green, Yellow, pink, Brown
For which Rashi?
Not Available
Sagittarius
Element of Planets
Not Available
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Finger
Not Available
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Ring Metal
Not Available
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Energy
Not Available
Projective
Not to wear with
Not Available
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Powers
Not Available
Healing, Love, Money
Planetary
Not Available
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Talisman
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Tenacity
Brittle
Not Available
Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.19-3.23
3.49-3.57
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
{110} good
[001] Perfect
Chemical Composition
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Al2SiO4(F,OH)2
Pleochroism
x=yellow-orange
Weak
Transparency
Translucent
Transparent
Refractive Index
1.692-1.734
1.606-1.644
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Orthorhombic
Birefringence
0.0294-0.0452
0.008-0.011
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Not Available
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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Neptunite Vs Topaz Fracture
Fracture is an important parameter when you compare Neptunite and Topaz Physical Properties. It is necessary to understand the significance of these properties, before you compare Neptunite Vs Topaz 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 Neptunite is Brittle, Conchoidal, ConchoidalAnthony et al and Handbook of mineralogy (2001). Topaz fracture is Brittle, ConchoidalArthur Thomas, Gemstones (2009), Subconchoidal and Uneven.
Neptunite Vs Topaz Luster
A primary knowledge about Neptunite vs Topaz 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. Neptunite exhibits Vitreous luster. Topaz, on other hand, exhibits Vitreous luster.