Cordierite Iolite

Powellite

Cordierite Iolite Vs Powellite

Cordierite Iolite

Powellite

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Astrology

Origin

Canada, Madagascar, Southern and central Africa, Sri Lanka, USA

India

Color

Violet, Blue

Yellow, Greenish, Blue, Brown, Green, gray

Streak

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

2.56-2.664.23

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann

Conchoidal

Cleavage

Distinct

{111} Distinct

Mohs Hardness

7-7.53.5-4

2 10

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Chemical Composition

Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

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

Optical Properties

Luster

Vitreous

Greasy, Subadamantine

Pleochroism

Strong trichroism: colorless to yellowish

In deeply colored specimens: blue greenAnthony et al

Dispersion

0.020.03

0.005 1

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Transparency

Transparent

Refractive Index

1.542-1.5781.974-1.984

1 3.25

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Optic Character

Biaxial/+

Crystal System

Birefringence

0.008-0.012-9999

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Inner vision

Healing

Emotional healing

Qualities Associated

Intuition

Vitality

Cordierite Iolite Vs Powellite Fracture

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

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Cordierite Iolite Vs Powellite Luster

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