Cordierite

Howlite

Cordierite Vs Howlite

Cordierite

Howlite

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Astrology

Origin

Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania

Southern and central Africa

Color

Blue, Violet, Greenish, Brown, Colorless, Yellow, gray

Blue, Colorless, White

Streak

White

For which Rashi?

Gemini, Virgo

Planet

Element of Planets

Earth

Energy

How to Wear?

Finger

Ring Metal

Deities

Quan Yin

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.57-2.662.45-2.58

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal

Cleavage

Fair on {100}, poor on {001} and {010}

None

Mohs Hardness

7-7.53-3.5

2 10

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Chemical Composition

Mg2Al4Si5O18

Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Optical Properties

Luster

Greasy, Vitreous

Vitreous

Pleochroism

X = pale yellow

Dispersion

0.010.01

0.005 1

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Transparency

Refractive Index

-99991.583-1.608

1 3.25

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Optic Character

Crystal System

Orthorhombic

monoclinic

Birefringence

-99990.019

0 0.296

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Clarity

Benefits

Physical

Neurological

Supports healthy digestion

Aids in mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Intuition

Calming

Healing

Emotional healing

Qualities Associated

Psychic Abilities

Calming

Cordierite Vs Howlite Fracture

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

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Cordierite Vs Howlite Luster

A primary knowledge about Cordierite vs Howlite 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 exhibits Greasy and Vitreous luster. Howlite, on other hand, exhibits Vitreous luster.