Andradite

Sillimanite

Andradite Vs Sillimanite

Andradite

Sillimanite

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Astrology

Origin

Italy, Russia

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

Color

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

Blue, Green, Brownish, Greenish, Colorless, 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

Brittle

Tough

Solubility

Durability

Specific Gravity

3.70-4.103.20-3.26

1 7.18

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Fracture

Conchoidal, Uneven

Splintery

Cleavage

none

{010} perfect

Mohs Hardness

6.5-76-7.5

2 10

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Chemical Composition

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

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

Optical Properties

Luster

Adamantine, Resinous

Vitreous, Subadamantine, Silky

Pleochroism

Colourless to pale brown to yellow

Dispersion

0.060.02

0.005 1

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Transparency

Transparent

Transparent, Translucent

Refractive Index

1.88-1.941.653-1.685

1 3.25

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Optic Character

Crystal System

cubic

Orthorhombic

Birefringence

0.0570.020-0.022

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

Positivity

Creativity

Healing

Physical healing

Emotional healing

Qualities Associated

Empowerment

Creativity

Andradite Vs Sillimanite Fracture

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

Compare Green Gemstones

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Andradite Vs Sillimanite Luster

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