Chalcedony

Sillimanite

Chalcedony Vs Sillimanite

Chalcedony

Sillimanite

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Astrology

Origin

Zimbabwe

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

Color

Violet, White, gray, Blue, Brown, Black

Blue, Green, Brownish, Greenish, Colorless, gray

Streak

White

For which Rashi?

Cancer, Sagittarius

Planet

Element of Planets

Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Goddess Whope

Not to wear with

Powers

Protection

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Tough

Solubility

Soluble

Durability

Specific Gravity

2.55-2.703.20-3.26

1 7.18

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Fracture

Uneven, Splintery, Conchoidal

Splintery

Cleavage

Absent

{010} perfect

Mohs Hardness

6.5-76-7.5

2 10

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Chemical Composition

SiO₂

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

Optical Properties

Luster

Vitreous

Vitreous, Subadamantine, Silky

Pleochroism

Colourless to pale brown to yellow

Dispersion

0.010.02

0.005 1

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Transparency

Translucent, Translucent to opaque

Transparent, Translucent

Refractive Index

1.530-1.5431.653-1.685

1 3.25

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Optic Character

Crystal System

Trigonal

Orthorhombic

Birefringence

0.003-0.0090.020-0.022

0 0.296

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Clarity

Translucent

Transparent

Benefits

Physical

Neurological

Cardiovascular

Supports heart health

Respiratory

Good

Reproductive

Digestive

Psychology

Harmony

Creativity

Healing

Emotional healing

Qualities Associated

Harmony

Creativity

Chalcedony Vs Sillimanite Fracture

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

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Chalcedony Vs Sillimanite Luster

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