Nephrite

Polyhalite

Nephrite Vs Polyhalite

Nephrite

Polyhalite

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Astrology

Origin

China, Canada

Austria

Color

Green, Yellow, Brown, White, gray, Black

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

Brittle

Solubility

Soluble

Durability

Specific Gravity

2.90-3.102.78

1 7.18

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Fracture

Splintery, Granular

Conchoidal

Cleavage

None

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

Mohs Hardness

6-6.53.5

2 10

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Chemical Composition

Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

K2Ca2Mg(SO4)4·2H2O

Optical Properties

Luster

Vitreous, Greasy

Vitreous, Resinous

Pleochroism

None

Dispersion

0.010.02

0.005 1

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Transparency

Translucent

Refractive Index

1.600-1.6271.546-1.548

1 3.25

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Optic Character

Crystal System

monoclinic

Triclinic

Birefringence

0.0270.021

0 0.296

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Clarity

Translucent

Benefits

Physical

Neurological

Aids in mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Emotional Balance

Healing

Physical healing

Qualities Associated

Healing

Emotional Healing

Nephrite Vs Polyhalite Fracture

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

Compare Green Gemstones

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Nephrite Vs Polyhalite Luster

A primary knowledge about Nephrite 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. Nephrite exhibits Vitreous and Greasy luster. Polyhalite, on other hand, exhibits Vitreous and Resinous luster.