Andalusite

Cordierite Iolite

Andalusite Vs Cordierite Iolite

Andalusite

Cordierite Iolite

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Astrology

Origin

Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)

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

Color

Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red

Violet, Blue

Streak

White

For which Rashi?

Planet

Venus

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

3.05-3.212.56-2.66

1 7.18

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Fracture

Uneven, Subconchoidal, Splintery

Uneven, ConchoidalWalter Schumann

Cleavage

Good on {110}, poor on {100}

Distinct

Mohs Hardness

7.57-7.5

2 10

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Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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

Optical Properties

Luster

Vitreous, Greasy

Vitreous

Pleochroism

strongly trichroic

Strong trichroism: colorless to yellowish

Dispersion

0.020.02

0.005 1

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Transparency

Transparent, Translucent

Transparent

Refractive Index

1.627-1.6501.542-1.578

1 3.25

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Optic Character

Biaxial/+

Crystal System

Orthorhombic

Birefringence

0.009-0.0100.008-0.012

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Respiratory

Excellent

Good

Reproductive

Digestive

Psychology

Perception

Inner vision

Healing

Physical healing

Emotional healing

Qualities Associated

Self-Realization

Intuition

Andalusite Vs Cordierite Iolite Fracture

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

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Andalusite Vs Cordierite Iolite Luster

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