Grossular

Sillimanite

Grossular Vs Sillimanite

Grossular

Sillimanite

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Astrology

Origin

Sri Lanka, India, Brazil

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

Color

Green, Brown, Colorless, gray, Yellow

Blue, Green, Brownish, Greenish, Colorless, gray

Streak

Brownish, White

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

Solubility

Durability

Specific Gravity

3.55-3.733.20-3.26

1 7.18

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Fracture

Conchoidal, Uneven

Splintery

Cleavage

none

{010} perfect

Mohs Hardness

7-7.56-7.5

2 10

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Chemical Composition

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

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

Optical Properties

Luster

Greasy, Vitreous

Vitreous, Subadamantine, Silky

Pleochroism

None

Colourless to pale brown to yellow

Dispersion

0.020.02

0.005 1

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Transparency

Transparent, Translucent

Refractive Index

1.730-1.7601.653-1.685

1 3.25

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Optic Character

Crystal System

cubic

Orthorhombic

Birefringence

0.0200.020-0.022

0 0.296

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Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Helps in digestion and alleviates indigestion

Digestive

Psychology

Abundance

Creativity

Healing

Physical healing

Emotional healing

Qualities Associated

Abundance

Creativity

Grossular Vs Sillimanite Fracture

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

Compare Green Gemstones

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Grossular Vs Sillimanite Luster

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