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Kyanite
Kyanite

Sillimanite
Sillimanite



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Kyanite
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Sillimanite

Kyanite Vs Sillimanite

Astrology

Origin

Brazil, USA, Switzerland, Kenya, Mozambique, Russia, Nepal, India, Burma
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil

Color

Blue, Yellow, Colorless, White, gray, Green, Black
Blue, Green, Brownish, Greenish, Colorless, gray

Streak

White
White

For which Rashi?

Aries, Libra, Taurus
-

Planet

Jupiter
-

Element of Planets

Water
-

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

-
-

Not to wear with

-
-

Powers

Love
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

Brittle
Tough

Solubility

-
-

Durability

-
-

Specific Gravity

3.53-3.653.20-3.26
1 7.18
👆🏻

Fracture

Splintery
Splintery

Cleavage

[100] perfect [010] imperfect with 79° angle between
{010} perfect

Mohs Hardness

4-76-7.5
2 10
👆🏻

Chemical Composition

Al2SiO5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous, Pearly
Vitreous, Subadamantine, Silky

Pleochroism

Trichroic
Colourless to pale brown to yellow

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.71-1.741.653-1.685
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Orthorhombic

Birefringence

-99990.020-0.022
0 0.296
👆🏻

Clarity

-
Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus
-

Cardiovascular

Supports heart health
-

Respiratory

Good
Good

Reproductive

Supports reproductive health
-

Digestive

-
-

Psychology

Inner bridges
Creativity

Healing

Physical healing
Emotional healing

Qualities Associated

Inner Peace
Creativity

Kyanite Vs Sillimanite Fracture

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

Kyanite Vs Sillimanite Luster

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