Cordierite Iolite

Petalite

Cordierite Iolite Vs Petalite

Cordierite Iolite

Petalite

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1 Astrology

1.1 Origin

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

Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia

1.2 Color

Violet, Blue

Colorless, gray, Yellow, White

1.3 Streak

Not Available

Colorless

1.4 For which Rashi?

Not Available

1.5 Planet

Not Available

1.6 Element of Planets

Not Available

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Not Available

1.9 Deities

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Not Available

Brittle

2.2 Solubility

Not Available

insoluble

2.3 Durability

Not Available

2.4 Specific Gravity

2.56-2.662.40

1 7.18

2.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

2.6 Cleavage

Not Available

Perfect on {001}, poor on {201} with 38.5° angle between the two

2.7 Mohs Hardness

7-7.56-6.5

2 10

2.8 Chemical Composition

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

LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

3 Optical Properties

3.1 Luster

Vitreous

Vitreous, Pearly

3.2 Pleochroism

Strong trichroism: colorless to yellowish

AbsentWalter Schumann

3.3 Dispersion

0.020.01

0.007 1

3.4 Transparency

Transparent

Gemmological Tables (2004) More from other references

3.5 Refractive Index

1.542-1.5781.502-1.523

1 3.25

3.6 Optic Character

Biaxial/+

Not Available

3.7 Crystal System

Not Available

monoclinic

3.8 Birefringence

0.008-0.0120.012-0.016

0 0.296

3.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

4 Benefits

4.1 Physical

4.1.1 Neurological

Not Available

4.1.2 Cardiovascular

Not Available

4.1.3 Respiratory

Not Available

4.1.4 Reproductive

Not Available

4.1.5 Digestive

Not Available

4.2 Psychology

Not Available

4.3 Healing

Not Available

4.4 Qualities Associated

Not Available

Cordierite Iolite Vs Petalite Fracture

Fracture is an important parameter when you compare Cordierite Iolite and Petalite Physical Properties. It is necessary to understand the significance of these properties, before you compare Cordierite Iolite Vs Petalite 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 ConchoidalWalter Schumann, Gemstones of the world (2001), Uneven and Uneven. Petalite fracture is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references and Subconchoidal.

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Cordierite Iolite Vs Petalite Luster

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