Gypsum

Polyhalite

Gypsum Vs Polyhalite

Gypsum

Polyhalite

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Astrology

Origin

Mexico

Austria

Color

Colorless, White, Greenish, Brown

Colorless, White, Red, gray, pink

Streak

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

Flexible

Brittle

Solubility

Soluble

Durability

Specific Gravity

2.20-2.402.78

1 7.18

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Fracture

Conchoidal, Splintery, Fibrous

Conchoidal

Cleavage

Perfect on {010}, distinct on {100}

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

Mohs Hardness

23.5

2 10

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Chemical Composition

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

K2Ca2Mg(SO4)4·2H2O

Optical Properties

Luster

Vitreous, Silky, Pearly, Waxy

Vitreous, Resinous

Pleochroism

None

Dispersion

0.010.02

0.005 1

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Transparency

Transparent, Translucent

Refractive Index

1.521-1.5311.546-1.548

1 3.25

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Optic Character

Crystal System

monoclinic

Triclinic

Birefringence

0.0100.021

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Harmony

Healing

Emotional healing

Physical healing

Qualities Associated

Harmony

Emotional Healing

Gypsum Vs Polyhalite Fracture

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

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Gypsum Vs Polyhalite Luster

A primary knowledge about Gypsum vs Polyhalite 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. Gypsum exhibits Vitreous, Silky, Pearly and Waxy luster. Polyhalite, on other hand, exhibits Vitreous and Resinous luster.