Zoisite

Sillimanite

Zoisite Vs Sillimanite

Zoisite

Sillimanite

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Astrology

Origin

Pakistan, Tanzania

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

Color

Brown, gray, Green, Blue, rose, Red

Blue, Green, Brownish, Greenish, Colorless, gray

Streak

White, Colorless

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

3.20-3.503.20-3.26

1 7.18

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Fracture

Uneven, Conchoidal, Even

Splintery

Cleavage

Perfect {010} imperfect {100}

{010} perfect

Mohs Hardness

6-76-7.5

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Optical Properties

Luster

Vitreous

Vitreous, Subadamantine, Silky

Pleochroism

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

Colourless to pale brown to yellow

Dispersion

0.020.02

0.005 1

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Transparency

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

Transparent, Translucent

Refractive Index

1.685-1.7071.653-1.685

1 3.25

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Optic Character

Crystal System

Orthorhombic

Birefringence

0.006-0.0180.020-0.022

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Cardiovascular

Supports heart health

Respiratory

Excellent

Good

Reproductive

Supports reproductive health

Digestive

Psychology

Transformation

Creativity

Healing

Emotional healing

Qualities Associated

Creativity

Zoisite Vs Sillimanite Fracture

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

Compare Brown Gemstones

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Zoisite Vs Sillimanite Luster

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