Dumortierite

Blue John

Dumortierite Vs Blue John

Dumortierite

Blue John

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Astrology

Origin

Southern and central Africa

Color

Blue, Violet, Brown, White, Greenish, pink

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

Streak

White

For which Rashi?

Leo, Sagittarius

Planet

Saturn

Element of Planets

Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Isis

Not to wear with

Powers

Healing

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.26-3.413.00-3.25

1 7.18

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Fracture

Fibrous, ConchoidalWalter Schumann

Cleavage

Distinct on {100}, poor on {110}; parting on {001}

Perfect

Mohs Hardness

7-8.5-9999

2 10

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Chemical Composition

AlAl₆O₃BSi₃O₁₈

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

Optical Properties

Luster

Vitreous

Pleochroism

Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue

Dispersion

0.010.02

0.005 1

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Transparency

Translucent, Translucent to opaque

Transparent

Refractive Index

1.669-1.7231.432-1.436

1 3.25

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Optic Character

Crystal System

Orthorhombic

Birefringence

0.011-0.037-9999

0 0.296

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Clarity

Translucent

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Respiratory

Good

Excellent

Reproductive

Digestive

Psychology

Patience

Harmony

Healing

Emotional healing

Qualities Associated

Patience

Mental Clarity

Dumortierite Vs Blue John Fracture

Fracture is an important parameter when you compare Dumortierite and Blue John Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Blue John 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 Dumortierite is Fibrous and ConchoidalWalter Schumann.

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Dumortierite Vs Blue John Luster

A primary knowledge about Dumortierite vs Blue John 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. Dumortierite exhibits Vitreous luster.