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Cordierite
Cordierite

Opal
Opal



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X
Cordierite
X
Opal

Cordierite Vs Opal

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Astrology

Origin

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

Color

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

Streak

White
White

For which Rashi?

-
Cancer, Libra, Scorpio

Planet

-
Mercury

Element of Planets

-
Earth, Air, Water

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

-
Cupid

Not to wear with

-
-

Powers

-
Astral Projection, Psychicism

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

Brittle
BrittleWalter Schumann

Solubility

-
hot salt water

Durability

-
-

Specific Gravity

2.57-2.661.98-2.25
1 7.18
👆🏻

Fracture

Subconchoidal, Conchoidal
Conchoidal

Cleavage

Fair on {100}, poor on {001} and {010}
None

Mohs Hardness

7-7.55-6.5
2 10
👆🏻

Chemical Composition

Mg2Al4Si5O18
SiO2 · nH2O

Optical Properties

Luster

Greasy, Vitreous
Vitreous, Pearly

Pleochroism

X = pale yellow
None

Dispersion

0.010.01
0.005 1
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Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

-99991.37-1.52
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

-9999-9999
0 0.296
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Clarity

-
Transparent

Benefits

Physical

Neurological

Supports healthy digestion
Enhances mental clarity and focus

Cardiovascular

-
-

Respiratory

Good
-

Reproductive

-
-

Digestive

-
-

Psychology

Intuition
Creativity

Healing

Emotional healing
Emotional healing

Qualities Associated

Psychic Abilities
Creativity

Cordierite Vs Opal Fracture

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

Cordierite Vs Opal Luster

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