Sillimanite

Andradite

Sillimanite Vs Andradite

Sillimanite

Andradite

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Astrology

Origin

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

Italy, Russia

Color

Blue, Green, Brownish, Greenish, Colorless, gray

Colorless, Green, Black, Brown, Red, Greenish, Yellow, gray

Streak

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

3.20-3.263.70-4.10

1 7.18

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Fracture

Splintery

Conchoidal, Uneven

Cleavage

{010} perfect

none

Mohs Hardness

6-7.56.5-7

2 10

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Chemical Composition

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

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Optical Properties

Luster

Vitreous, Subadamantine, Silky

Adamantine, Resinous

Pleochroism

Colourless to pale brown to yellow

Dispersion

0.020.06

0.005 1

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Transparency

Transparent, Translucent

Transparent

Refractive Index

1.653-1.6851.88-1.94

1 3.25

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Optic Character

Crystal System

Orthorhombic

cubic

Birefringence

0.020-0.0220.057

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Respiratory

Good

Reproductive

Digestive

Psychology

Creativity

Positivity

Healing

Emotional healing

Physical healing

Qualities Associated

Creativity

Empowerment

Sillimanite Vs Andradite Fracture

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

Compare Blue Gemstones

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Sillimanite Vs Verdite

Sillimanite Vs Violane

Sillimanite Vs Andradite Luster

A primary knowledge about Sillimanite vs Andradite 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. Andradite, on other hand, exhibits Adamantine and Resinous luster.