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Sillimanite
Sillimanite

Creedite
Creedite



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Sillimanite
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Creedite

Sillimanite Vs Creedite

Astrology

Origin

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

Color

Blue, Green, Brownish, Greenish, Colorless, gray
Colorless, Violet, White

Streak

White
White

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

Tough
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.20-3.262.70
1 7.18
👆🏻

Fracture

Splintery
Uneven, Conchoidal

Cleavage

{010} perfect
Perfect on {100}

Mohs Hardness

6-7.54.5
2 10
👆🏻

Chemical Composition

Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Optical Properties

Luster

Vitreous, Subadamantine, Silky
Vitreous

Pleochroism

Colourless to pale brown to yellow
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.653-1.6851.461-1.485
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.020-0.0220.024
0 0.296
👆🏻

Clarity

Transparent
Transparent

Benefits

Physical

Neurological

-
-

Cardiovascular

-
Supports heart health

Respiratory

Good
Good

Reproductive

-
-

Digestive

-
3.6g

Psychology

Creativity
Spiritual growth

Healing

Emotional healing
Emotional healing

Qualities Associated

Creativity
Spiritual Connection

Sillimanite Vs Creedite Fracture

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

Sillimanite Vs Creedite Luster

A primary knowledge about Sillimanite vs Creedite 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. Creedite, on other hand, exhibits Vitreous luster.