Nepheline

Powellite

Nepheline Vs Powellite

Nepheline

Powellite

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Astrology

Origin

Canada

India

Color

White, Reddish, gray, Brown, Brownish

Yellow, Greenish, Blue, Brown, Green, gray

Streak

White

Yellow

For which Rashi?

Planet

Element of Planets

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.55-2.654.23

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal

Cleavage

[1010] Poor

{111} Distinct

Mohs Hardness

5-63.5-4

2 10

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Chemical Composition

Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous, Greasy

Greasy, Subadamantine

Pleochroism

In deeply colored specimens: blue greenAnthony et al

Dispersion

0.010.03

0.005 1

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Transparency

Transparent, Translucent

Transparent

Refractive Index

1.529-1.5471.974-1.984

1 3.25

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Optic Character

Crystal System

Hexagonal

Birefringence

0.003-0.004-9999

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Healing

Emotional healing

Qualities Associated

Clarity

Vitality

Nepheline Vs Powellite Fracture

Fracture is an important parameter when you compare Nepheline and Powellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Nepheline Vs Powellite 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 Nepheline is Subconchoidal and Conchoidal. Powellite fracture is Conchoidal.

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Nepheline Vs Powellite Luster

A primary knowledge about Nepheline vs Powellite 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. Nepheline exhibits Vitreous and Greasy luster. Powellite, on other hand, exhibits Greasy and Subadamantine luster.