Sillimanite

Zoisite

Sillimanite Vs Zoisite

Sillimanite

Zoisite

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Astrology

Origin

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

Pakistan, Tanzania

Color

Blue, Green, Brownish, Greenish, Colorless, gray

Brown, gray, Green, Blue, rose, Red

Streak

White

White, Colorless

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

3.20-3.263.20-3.50

1 7.18

👆🏻

Fracture

Splintery

Uneven, Conchoidal, Even

Cleavage

{010} perfect

Perfect {010} imperfect {100}

Mohs Hardness

6-7.56-7

2 10

👆🏻

Chemical Composition

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

Ca₂Al₃(SiO₄)₃(OH)

Optical Properties

Luster

Vitreous, Subadamantine, Silky

Vitreous

Pleochroism

Colourless to pale brown to yellow

X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green

Dispersion

0.020.02

0.005 1

👆🏻

Transparency

Transparent, Translucent

Transparent, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

1.653-1.6851.685-1.707

1 3.25

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Optic Character

Crystal System

Orthorhombic

Birefringence

0.020-0.0220.006-0.018

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Cardiovascular

Supports heart health

Respiratory

Good

Excellent

Reproductive

Supports reproductive health

Digestive

Psychology

Creativity

Transformation

Healing

Emotional healing

Qualities Associated

Creativity

Sillimanite Vs Zoisite Fracture

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

Compare Blue Gemstones

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Sillimanite Vs Verdite

Sillimanite Vs Violane

Sillimanite Vs Zoisite Luster

A primary knowledge about Sillimanite vs Zoisite 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. Zoisite, on other hand, exhibits Vitreous luster.