Dumortierite

Hercynite

Dumortierite Vs Hercynite

Dumortierite

Hercynite

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Astrology

Origin

Southern and central Africa

Color

Blue, Violet, Brown, White, Greenish, pink

Yellow, Black

Streak

White

Green

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

3.26-3.414.39

1 7.18

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Fracture

Fibrous, ConchoidalWalter Schumann

Uneven

Cleavage

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

{111} Indistinct, {111} Indistinct, {111} Indistinct

Mohs Hardness

7-8.57.5-8

2 10

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Chemical Composition

AlAl₆O₃BSi₃O₁₈

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

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

0.010.03

0.005 1

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Transparency

Translucent, Translucent to opaque

Translucent

Refractive Index

1.669-1.7231.80-1.83

1 3.25

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Optic Character

Crystal System

Orthorhombic

Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m

Birefringence

0.011-0.037-9999

0 0.296

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Clarity

Translucent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Patience

Healing

Emotional healing

Qualities Associated

Patience

Balance

Dumortierite Vs Hercynite Fracture

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

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Dumortierite Vs Hercynite Luster

A primary knowledge about Dumortierite vs Hercynite 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. Hercynite, on other hand, exhibits Vitreous luster.