Sillimanite

Coral

Sillimanite Vs Coral

Sillimanite

Coral

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Astrology

Origin

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

Southern and central Africa

Color

Blue, Green, Brownish, Greenish, Colorless, gray

White, Blue

Streak

White

For which Rashi?

Pisces

Planet

Neptune

Element of Planets

Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Venus

Not to wear with

Powers

Healing, Protection

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Tough

Solubility

Durability

Specific Gravity

3.20-3.262.60-2.70

1 7.18

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Fracture

Splintery

Irregular

Cleavage

{010} perfect

None

Mohs Hardness

6-7.53-4

2 10

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Chemical Composition

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

CaCO 3Ulrich Henn and Claudio C.

Optical Properties

Luster

Vitreous, Subadamantine, Silky

Pleochroism

Colourless to pale brown to yellow

Dispersion

0.020.03

0.005 1

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Transparency

Transparent, Translucent

Translucent

Refractive Index

1.653-1.6851.486-1.658

1 3.25

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Optic Character

Crystal System

Orthorhombic

Trigonal

Birefringence

0.020-0.0220.160-0.172

0 0.296

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Clarity

Transparent

Translucent

Benefits

Physical

Neurological

Cardiovascular

Enhances intuition and psychic abilities

Respiratory

Good

Reproductive

Digestive

Psychology

Creativity

Emotional balance

Healing

Emotional healing

Qualities Associated

Creativity

Emotional Balance

Sillimanite Vs Coral Fracture

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

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Sillimanite Vs Coral Luster

A primary knowledge about Sillimanite vs Coral 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.