Povondraite

Achroite

Povondraite Vs Achroite

Povondraite

Achroite

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Astrology

Origin

Afghanistan, Sri Lanka

Color

Brownish, Black

Colorless, Blue

Streak

Brown

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

3.262.90-3.40

1 7.18

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Fracture

Uneven

Uneven, ConchoidalWalter Schumann

Cleavage

None

Indiscernible

Mohs Hardness

-99997-7.5

2 10

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Chemical Composition

NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Optical Properties

Luster

Resinous

Pleochroism

Strong: yellow-brown

Dispersion

0.020.02

0.005 1

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Transparency

Translucent

Transparent, Translucent

Refractive Index

-99991.614-1.666

1 3.25

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Optic Character

Crystal System

Birefringence

-99990.014-0.040

0 0.296

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Clarity

Translucent

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Excellent

Reproductive

Digestive

Psychology

Balance

Healing

Emotional healing

Qualities Associated

Protection

Spiritual Growth

Povondraite Vs Achroite Fracture

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

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Povondraite Vs Achroite Luster

A primary knowledge about Povondraite vs Achroite 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. Povondraite exhibits Resinous luster.