×

Zircon
Zircon

Sillimanite
Sillimanite



ADD
Compare
X
Zircon
X
Sillimanite

Zircon Vs Sillimanite

Astrology

Origin

Tanzania, Kenya, Madagascar, Cambodia, Sri Lanka, Burma, Thailand, Vietnam, Australia
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil

Color

Blue, Green, Yellow, Brown, White, Colorless, Red, pink, Reddish, gray
Blue, Green, Brownish, Greenish, Colorless, gray

Streak

White
White

For which Rashi?

Sagittarius, Virgo
-

Planet

Jupiter
-

Element of Planets

Earth, Water
-

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

Apollo
-

Not to wear with

-
-

Powers

Protection
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

Brittle
Tough

Solubility

insoluble
-

Durability

-
-

Specific Gravity

3.93-4.733.20-3.26
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
Splintery

Cleavage

{110} and {111}
{010} perfect

Mohs Hardness

7.56-7.5
2 10
👆🏻

Chemical Composition

ZrSiO4
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Adamantine
Vitreous, Subadamantine, Silky

Pleochroism

Weak
Colourless to pale brown to yellow

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.810-2.0241.653-1.685
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Orthorhombic

Birefringence

0.047-0.0550.020-0.022
0 0.296
👆🏻

Clarity

Transparent
Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus
-

Cardiovascular

-
-

Respiratory

Good
Good

Reproductive

-
-

Digestive

-
-

Psychology

Clarity
Creativity

Healing

Physical healing
Emotional healing

Qualities Associated

-
Creativity

Zircon Vs Sillimanite Fracture

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

Zircon Vs Sillimanite Luster

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