Blue John

Polyhalite

Blue John Vs Polyhalite

Blue John

Polyhalite

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Astrology

Origin

Austria

Color

White, Colorless, Blue, Red, Green, Yellow, Violet

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

3.00-3.252.78

1 7.18

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Fracture

Conchoidal

Cleavage

Perfect

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

Mohs Hardness

-99993.5

2 10

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Chemical Composition

CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)

K2Ca2Mg(SO4)4·2H2O

Optical Properties

Luster

Vitreous, Resinous

Pleochroism

Dispersion

0.020.02

0.005 1

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Transparency

Transparent

Refractive Index

1.432-1.4361.546-1.548

1 3.25

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Optic Character

Crystal System

Triclinic

Birefringence

-99990.021

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Respiratory

Excellent

Good

Reproductive

Digestive

Psychology

Harmony

Healing

Emotional healing

Physical healing

Qualities Associated

Mental Clarity

Emotional Healing

Blue John Vs Polyhalite Fracture

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

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Blue John Vs Polyhalite Luster

A primary knowledge about Blue John 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. Polyhalite, on other hand, exhibits Vitreous and Resinous luster.