Sapphire

Sillimanite

Sapphire Vs Sillimanite

Sapphire

Sillimanite

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Astrology

Origin

Burma, Sri Lanka, India, Madagascar, Kenya, Tanzania, Thailand, Cambodia, China, Australia, USA

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

Color

Colorless, Yellow, Green, Violet, White, Blue, Red, pink

Blue, Green, Brownish, Greenish, Colorless, gray

Streak

White

For which Rashi?

Pisces, Taurus, Gemini, Libra

Planet

Saturn

Element of Planets

Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Apollo

Not to wear with

Powers

Psychic Power

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Tough

Solubility

insoluble

Durability

Specific Gravity

3.95-4.033.20-3.26

1 7.18

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Fracture

Uneven

Splintery

Cleavage

None, but may exhibit parting

{010} perfect

Mohs Hardness

96-7.5

2 10

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Chemical Composition

Al ₂ O ₃

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

Optical Properties

Luster

Vitreous, Adamantine

Vitreous, Subadamantine, Silky

Pleochroism

Strong

Colourless to pale brown to yellow

Dispersion

0.020.02

0.005 1

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Transparency

Transparent, Translucent, Transparent to opaque

Transparent, Translucent

Refractive Index

1.762-1.7881.653-1.685

1 3.25

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Optic Character

Crystal System

Trigonal

Orthorhombic

Birefringence

0.008-0.0090.020-0.022

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Intuition

Creativity

Healing

Emotional healing

Qualities Associated

Wisdom

Creativity

Sapphire Vs Sillimanite Fracture

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

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Sapphire Vs Sillimanite Luster

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