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Omphacite
Omphacite

Sillimanite
Sillimanite



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Omphacite
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Sillimanite

Omphacite Vs Sillimanite

Astrology

Origin

Southern and central Africa
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil

Color

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

Streak

Greenish, 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

Solubility

-
-

Durability

-
-

Specific Gravity

3.16-3.433.20-3.26
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Splintery

Cleavage

{110} Good, {110} Good
{010} perfect

Mohs Hardness

5-66-7.5
2 10
👆🏻

Chemical Composition

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous
Vitreous, Subadamantine, Silky

Pleochroism

Weak: colorless -- very pale green -- very pale green
Colourless to pale brown to yellow

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

TranslucentAnthony et al
Transparent, Translucent

Refractive Index

1.662-1.7231.653-1.685
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.020-0.022
0 0.296
👆🏻

Clarity

TranslucentAnthony et al
Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus
-

Cardiovascular

-
-

Respiratory

Good
Good

Reproductive

-
-

Digestive

-
-

Psychology

Empowerment
Creativity

Healing

Physical healing
Emotional healing

Qualities Associated

Transformation
Creativity

Omphacite Vs Sillimanite Fracture

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

Omphacite Vs Sillimanite Luster

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