Hercynite

Dravite

Hercynite Vs Dravite

Hercynite

Dravite

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Astrology

Origin

Southern and central Africa

Color

Yellow, Black

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

Streak

Green

Colorless

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

Solubility

Durability

Specific Gravity

4.393.03-3.18

1 7.18

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Fracture

Uneven

Uneven, Irregular, Conchoidal

Cleavage

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

{???} Indistinct

Mohs Hardness

7.5-87-7.5

2 10

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Chemical Composition

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

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Optical Properties

Luster

Vitreous

Pleochroism

Very strong: pale yellow colorless

Dispersion

0.030.02

0.005 1

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Transparency

Translucent

Transparent

Refractive Index

1.80-1.831.614-1.666

1 3.25

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Optic Character

Crystal System

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

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

Birefringence

-99990.014-0.032

0 0.296

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Clarity

Translucent

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Self-acceptance

Healing

Emotional healing

Qualities Associated

Balance

Self-Exploration

Hercynite Vs Dravite Fracture

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

Compare Yellow Gemstones

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Hercynite Vs Dravite Luster

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