Polyhalite

Gahnite

Polyhalite Vs Gahnite

Polyhalite

Gahnite

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Astrology

Origin

Austria

Australia

Color

Colorless, White, Red, gray, pink

Blue, Green, Greenish, Black

Streak

White

Grey, gray

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

Brittle

Solubility

Soluble

Durability

Specific Gravity

2.784.00-4.62

1 7.18

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Fracture

Conchoidal

Conchoidal, Uneven

Cleavage

Perfect on {10 1 }; parting on {010}

Indistinct parting on [111]

Mohs Hardness

3.57.5-8

2 10

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Chemical Composition

K2Ca2Mg(SO4)4·2H2O

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous, Resinous

Vitreous

Pleochroism

Dispersion

0.020.03

0.005 1

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Transparency

Refractive Index

1.546-1.5481.790-1.818

1 3.25

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Optic Character

Crystal System

Triclinic

cubic

Birefringence

0.021-9999

0 0.296

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Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Aids in digestion and soothes the stomach

Reproductive

Digestive

Psychology

Protection

Healing

Physical healing

Emotional healing

Qualities Associated

Emotional Healing

Harmony

Polyhalite Vs Gahnite Fracture

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

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Polyhalite Vs Gahnite Luster

A primary knowledge about Polyhalite vs Gahnite 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. Polyhalite exhibits Vitreous and Resinous luster. Gahnite, on other hand, exhibits Vitreous luster.