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Cordierite Iolite
Cordierite Iolite

Willemite
Willemite



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Cordierite Iolite
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Willemite

Cordierite Iolite Vs Willemite

Astrology

Origin

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

Color

Violet, Blue
Yellow, Brown, Red, White, Green, Reddish, Black

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

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.56-2.663.89-4.18
1 7.18
👆🏻

Fracture

Uneven, ConchoidalWalter Schumann
Conchoidal, Uneven

Cleavage

Distinct
{0001}, {11 2 0} imperfect

Mohs Hardness

7-7.55.5
2 10
👆🏻

Chemical Composition

Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

Strong trichroism: colorless to yellowish
-

Dispersion

0.020.17
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.542-1.5781.687-1.723
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

-
Trigonal

Birefringence

0.008-0.0120.028-0.030
0 0.296
👆🏻

Clarity

Transparent
Transparent

Benefits

Physical

Neurological

-
-

Cardiovascular

-
-

Respiratory

Good
Poor

Reproductive

-
-

Digestive

-
-

Psychology

Inner vision
Optimism

Healing

Emotional healing
-

Qualities Associated

Intuition
Transformation

Cordierite Iolite Vs Willemite Fracture

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

Cordierite Iolite Vs Willemite Luster

A primary knowledge about Cordierite Iolite vs Willemite 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. Willemite, on other hand, exhibits Vitreous and Resinous luster.