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Opal
Opal

Cordierite Iolite
Cordierite Iolite



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Opal
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Cordierite Iolite

Opal Vs Cordierite Iolite

Astrology

Origin

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

Color

Yellow, White, Red, Brown, Blue
Violet, Blue

Streak

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

BrittleWalter Schumann
-

Solubility

hot salt water
-

Durability

-
-

Specific Gravity

1.98-2.252.56-2.66
1 7.18
👆🏻

Fracture

Conchoidal
Uneven, ConchoidalWalter Schumann

Cleavage

None
Distinct

Mohs Hardness

5-6.57-7.5
2 10
👆🏻

Chemical Composition

SiO2 · nH2O
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

None
Strong trichroism: colorless to yellowish

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent, Transparent to translucent
Transparent

Refractive Index

1.37-1.521.542-1.578
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

Trigonal
-

Birefringence

-99990.008-0.012
0 0.296
👆🏻

Clarity

Transparent
Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus
-

Cardiovascular

-
-

Respiratory

-
Good

Reproductive

-
-

Digestive

-
-

Psychology

Creativity
Inner vision

Healing

Emotional healing
Emotional healing

Qualities Associated

Creativity
Intuition

Opal Vs Cordierite Iolite Fracture

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

Opal Vs Cordierite Iolite Luster

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