Biotite

Nephrite

Biotite Vs Nephrite

Biotite

Nephrite

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Astrology

Origin

China, Canada

Color

Brown, Yellow, White, Greenish

Green, Yellow, Brown, White, gray, Black

Streak

White, gray

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

Durability

Specific Gravity

2.7-3.32.90-3.10

1 7.18

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Fracture

Uneven, Even

Splintery, Granular

Cleavage

Perfect on the {001}

None

Mohs Hardness

2.5-3.06-6.5

2 10

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Chemical Composition

K(Mg,Fe++)3[AlSi3O10(OH,F)2

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

Optical Properties

Luster

Vitreous, Pearly

Vitreous, Greasy

Pleochroism

Strong

None

Dispersion

-0.01

0.005 1

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Transparency

Translucent

Refractive Index

1.565-1.6251.600-1.627

1 3.25

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Optic Character

Crystal System

monoclinic

Birefringence

0.03-0.070.027

0 0.296

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Clarity

Translucent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Aids in mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Grounding

Emotional Balance

Healing

Emotional healing

Physical healing

Qualities Associated

Grounding

Healing

Biotite Vs Nephrite Fracture

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

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Biotite Vs Nephrite Luster

A primary knowledge about Biotite vs Nephrite 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. Biotite exhibits Vitreous and Pearly luster. Nephrite, on other hand, exhibits Vitreous and Greasy luster.