Alunite

Powellite

Alunite Vs Powellite

Alunite

Powellite

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Astrology

Origin

Australia, Italy

India

Color

Yellow, Red, Reddish, Brown, Colorless, White, gray

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

Brittle

Solubility

Soluble

Durability

Specific Gravity

2.6-2.94.23

1 7.18

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Fracture

Conchoidal, Uneven

Conchoidal

Cleavage

On {0001}, perfect

{111} Distinct

Mohs Hardness

3.5-43.5-4

2 10

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Chemical Composition

KAl3(SO4)2(OH)6

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

Optical Properties

Luster

Vitreous, Pearly

Greasy, Subadamantine

Pleochroism

In deeply colored specimens: blue greenAnthony et al

Dispersion

0.020.03

0.005 1

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Transparency

Transparent

Refractive Index

1.5721.974-1.984

1 3.25

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Optic Character

Crystal System

Trigonal

Birefringence

0.020-9999

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Stability

Healing

Emotional healing

Qualities Associated

Stability

Vitality

Alunite Vs Powellite Fracture

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

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Alunite Vs Powellite Luster

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