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Opal
Opal

Cordierite
Cordierite



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X
Opal
X
Cordierite

Opal Vs Cordierite

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Astrology

Origin

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

Color

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

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

BrittleWalter Schumann
Brittle

Solubility

hot salt water
-

Durability

-
-

Specific Gravity

1.98-2.252.57-2.66
1 7.18
👆🏻

Fracture

Conchoidal
Subconchoidal, Conchoidal

Cleavage

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

Mohs Hardness

5-6.57-7.5
2 10
👆🏻

Chemical Composition

SiO2 · nH2O
Mg2Al4Si5O18

Optical Properties

Luster

Vitreous, Pearly
Greasy, Vitreous

Pleochroism

None
X = pale yellow

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent, Translucent, Transparent to translucent
-

Refractive Index

1.37-1.52-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
-

Benefits

Physical

Neurological

Enhances mental clarity and focus
Supports healthy digestion

Cardiovascular

-
-

Respiratory

-
Good

Reproductive

-
-

Digestive

-
-

Psychology

Creativity
Intuition

Healing

Emotional healing
Emotional healing

Qualities Associated

Creativity
Psychic Abilities

Opal Vs Cordierite Fracture

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

Opal Vs Cordierite Luster

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