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Gahnite
Gahnite

Goethite
Goethite



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Gahnite
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Goethite

Gahnite Vs Goethite

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Astrology

Origin

Australia
Australia

Color

Blue, Green, Greenish, Black
Brown, Reddish, Brownish, Yellow

Streak

Grey, gray
Brown, Brownish, Yellow

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

-
HCl soluble

Durability

-
-

Specific Gravity

4.00-4.624.27-4.29
1 7.18
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Fracture

Conchoidal, Uneven
Uneven

Cleavage

Indistinct parting on [111]
Perfect {010}

Mohs Hardness

7.5-85-5.5
2 10
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Chemical Composition

ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)
FeO(OH)Arthur Thomas , Gemstones (2009)

Optical Properties

Luster

Vitreous
Adamantine

Pleochroism

-
VisibleArthur Thomas

Dispersion

0.030.05
0.005 1
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Transparency

-
-

Refractive Index

1.790-1.8182.26-2.398
1 3.25
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Optic Character

-
-

Crystal System

cubic
Orthorhombic

Birefringence

-99990.138
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Benefits

Physical

Neurological

Enhances mental clarity and focus
-

Cardiovascular

-
-

Respiratory

Aids in digestion and soothes the stomach
-

Reproductive

-
-

Digestive

-
-

Psychology

Protection
Creativity

Healing

Emotional healing
Emotional healing

Qualities Associated

Harmony
Emotional Healing

Gahnite Vs Goethite Fracture

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

Gahnite Vs Goethite Luster

A primary knowledge about Gahnite vs Goethite 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. Gahnite exhibits Vitreous luster. Goethite, on other hand, exhibits Adamantine luster.