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Cordierite Iolite
Cordierite Iolite

Gedrite
Gedrite



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Cordierite Iolite
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Gedrite

Cordierite Iolite Vs Gedrite

Astrology

Origin

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

Color

Violet, Blue
Brown, Green, gray, White

Streak

-
gray, White

For which Rashi?

-
-

Planet

-
-

Element of Planets

-
-

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

-
-

Not to wear with

-
-

Powers

-
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.56-2.663.15-3.259
1 7.18
👆🏻

Fracture

Uneven, ConchoidalWalter Schumann
-

Cleavage

Distinct
Gedrite   Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

Mohs Hardness

7-7.55.5-6
2 10
👆🏻

Chemical Composition

Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Strong trichroism: colorless to yellowish
Weak to moderate

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.542-1.5781.625-1.718
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

-
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

Birefringence

0.008-0.012-9999
0 0.296
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Clarity

Transparent
Transparent

Benefits

Physical

Neurological

-
-

Cardiovascular

-
-

Respiratory

Good
-

Reproductive

-
-

Digestive

-
-

Psychology

Inner vision
Focus

Healing

Emotional healing
-

Qualities Associated

Intuition
Protection

Cordierite Iolite Vs Gedrite Fracture

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

Cordierite Iolite Vs Gedrite Luster

A primary knowledge about Cordierite Iolite vs Gedrite 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. Gedrite, on other hand, exhibits Vitreous luster.