Sillimanite

Aragonite

Sillimanite Vs Aragonite

Sillimanite

Aragonite

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Astrology

Origin

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

Canada, Pakistan

Color

Blue, Green, Brownish, Greenish, Colorless, gray

Reddish, Greenish, White, Red, Yellow, Green, Grey, Blue, Brown, Colorless, gray, orange

Streak

White

For which Rashi?

Virgo, Capricorn

Planet

Element of Planets

Earth

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Protection

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Tough

Brittle

Solubility

Dilute acid

Durability

Specific Gravity

3.20-3.262.93-2.96

1 7.18

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Fracture

Splintery

Subconchoidal, Conchoidal

Cleavage

{010} perfect

Distinct on {010}, imperfect {110} and {011}

Mohs Hardness

6-7.53.5-4

2 10

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Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Optical Properties

Luster

Vitreous, Subadamantine, Silky

Vitreous, Resinous

Pleochroism

Colourless to pale brown to yellow

StrongArthur Thomas

Dispersion

0.020.17

0.005 1

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Transparency

Transparent, Translucent

Refractive Index

1.653-1.6851.525-1.686

1 3.25

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Optic Character

Crystal System

Orthorhombic

Birefringence

0.020-0.0220.155

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Promotes focus and concentration

Cardiovascular

Supports heart health

Respiratory

Good

Poor

Reproductive

Digestive

Psychology

Creativity

Stability

Healing

Emotional healing

Qualities Associated

Creativity

Centering

Sillimanite Vs Aragonite Fracture

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

Compare Blue Gemstones

Sillimanite Vs Tortoiseshell

Sillimanite Vs Verdite

Sillimanite Vs Violane

Sillimanite Vs Aragonite Luster

A primary knowledge about Sillimanite vs Aragonite 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. Aragonite, on other hand, exhibits Vitreous and Resinous luster.