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Legrandite
Legrandite

Cordierite Iolite
Cordierite Iolite



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Legrandite
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Cordierite Iolite

Legrandite Vs Cordierite Iolite

Astrology

Origin

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

Color

Yellow, yellowish orange
Violet, Blue

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

-
-

Durability

-
-

Specific Gravity

3.98-4.042.56-2.66
1 7.18
👆🏻

Fracture

Conchoidal
Uneven, ConchoidalWalter Schumann

Cleavage

Imperfect, poor one {100}
Distinct

Mohs Hardness

4.5-57-7.5
2 10
👆🏻

Chemical Composition

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

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Colorless
Strong trichroism: colorless to yellowish

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.702-1.7401.542-1.578
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

monoclinic
-

Birefringence

0.0600.008-0.012
0 0.296
👆🏻

Clarity

-
Transparent

Benefits

Physical

Neurological

-
-

Cardiovascular

-
-

Respiratory

-
Good

Reproductive

-
-

Digestive

-
-

Psychology

Creativity
Inner vision

Healing

-
Emotional healing

Qualities Associated

Optimism
Intuition

Legrandite Vs Cordierite Iolite Fracture

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

Legrandite Vs Cordierite Iolite Luster

A primary knowledge about Legrandite vs Cordierite Iolite 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. Legrandite exhibits Vitreous luster. Cordierite Iolite, on other hand, exhibits Vitreous luster.