Cordierite

Alunite

Cordierite Vs Alunite

Cordierite

Alunite

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Astrology

Origin

Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania

Australia, Italy

Color

Blue, Violet, Greenish, Brown, Colorless, Yellow, gray

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

Streak

White

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

2.57-2.662.6-2.9

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal, Uneven

Cleavage

Fair on {100}, poor on {001} and {010}

On {0001}, perfect

Mohs Hardness

7-7.53.5-4

2 10

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Chemical Composition

Mg2Al4Si5O18

KAl3(SO4)2(OH)6

Optical Properties

Luster

Greasy, Vitreous

Vitreous, Pearly

Pleochroism

X = pale yellow

Dispersion

0.010.02

0.005 1

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Transparency

Refractive Index

-99991.572

1 3.25

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Optic Character

Crystal System

Orthorhombic

Trigonal

Birefringence

-99990.020

0 0.296

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Clarity

Benefits

Physical

Neurological

Supports healthy digestion

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Intuition

Stability

Healing

Emotional healing

Qualities Associated

Psychic Abilities

Stability

Cordierite Vs Alunite Fracture

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

Compare Blue Gemstones

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Cordierite Vs Alunite Luster

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