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Sillimanite
Sillimanite

Prasiolite
Prasiolite



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Sillimanite
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Prasiolite

Sillimanite Vs Prasiolite

Astrology

Origin

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

Color

Blue, Green, Brownish, Greenish, Colorless, gray
Green

Streak

White
-

For which Rashi?

-
Libra, Sagittarius, Taurus

Planet

-
Jupiter

Element of Planets

-
Water

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

-
-

Not to wear with

-
-

Powers

-
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

Tough
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.20-3.262.65
1 7.18
👆🏻

Fracture

Splintery
Conchoidal, ConchoidalWalter Schumann

Cleavage

{010} perfect
3,1

Mohs Hardness

6-7.57
2 10
👆🏻

Chemical Composition

Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
SiO 2Ulrich Henn and Claudio C.

Optical Properties

Luster

Vitreous, Subadamantine, Silky
Vitreous

Pleochroism

Colourless to pale brown to yellow
Very weak: light green pale greenWalter Schumann

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.653-1.6851.544-1.553
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.020-0.0220.009
0 0.296
👆🏻

Clarity

Transparent
Transparent

Benefits

Physical

Neurological

-
-

Cardiovascular

-
-

Respiratory

Good
Good

Reproductive

-
-

Digestive

-
Supports digestive health

Psychology

Creativity
-

Healing

Emotional healing
Emotional healing

Qualities Associated

Creativity
Spiritual Connection

Sillimanite Vs Prasiolite Fracture

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

Sillimanite Vs Prasiolite Luster

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