Pietersite

Sillimanite

Pietersite Vs Sillimanite

Pietersite

Sillimanite

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Astrology

Origin

Southern and central Africa

USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil

Color

Blue, Red

Blue, Green, Brownish, Greenish, Colorless, gray

Streak

White

For which Rashi?

Sagittarius, Leo

Planet

Mars

Element of Planets

Air

Energy

How to Wear?

Finger

Ring Metal

Deities

Freyja

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Tough

Solubility

Durability

Specific Gravity

-99993.20-3.26

1 7.18

👆🏻

Fracture

Splintery

Cleavage

None

{010} perfect

Mohs Hardness

56-7.5

2 10

👆🏻

Chemical Composition

H2O+Fe2+,H3O2+Fe3+Si4O12

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous, Subadamantine, Silky

Pleochroism

Colourless to pale brown to yellow

Dispersion

0.020.02

0.005 1

👆🏻

Transparency

Transparent, Translucent

Refractive Index

1.54-1.561.653-1.685

1 3.25

👆🏻

Optic Character

Crystal System

Trigonal

Orthorhombic

Birefringence

-99990.020-0.022

0 0.296

👆🏻

Clarity

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Empowerment

Creativity

Healing

Emotional healing

Qualities Associated

Clarity

Creativity

Pietersite Vs Sillimanite Fracture

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

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Pietersite Vs Sillimanite Luster

A primary knowledge about Pietersite vs Sillimanite 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. Sillimanite, on other hand, exhibits Vitreous, Subadamantine and Silky luster.