Biotite

Almandine

Biotite Vs Almandine

Biotite

Almandine

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Astrology

Origin

Austria, Brazil, Canada, India, Madagascar, Russia, Sri Lanka, USA

Color

Brown, Yellow, White, Greenish

Red, Brown, Brownish, Black

Streak

White, gray

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

Durability

Specific Gravity

2.7-3.33.95-4.30

1 7.18

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Fracture

Uneven, Even

Conchoidal

Cleavage

Perfect on the {001}

none

Mohs Hardness

2.5-3.07-7.5

2 10

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Chemical Composition

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

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Optical Properties

Luster

Vitreous, Pearly

Greasy, Vitreous

Pleochroism

Strong

None

Dispersion

-0.03

0.005 1

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Transparency

Refractive Index

1.565-1.6251.770-1.820

1 3.25

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Optic Character

Crystal System

monoclinic

cubic

Birefringence

0.03-0.07-9999

0 0.296

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Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Supports reproductive health

Digestive

Psychology

Grounding

Strength

Healing

Emotional healing

Qualities Associated

Grounding

Devotion

Biotite Vs Almandine Fracture

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

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Biotite Vs Almandine Luster

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