Sillimanite

Calcite

Sillimanite Vs Calcite

Sillimanite

Calcite

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Astrology

Origin

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

Mexico

Color

Blue, Green, Brownish, Greenish, Colorless, gray

White, Colorless, pink, Yellow, Brown

Streak

White

For which Rashi?

Cancer

Planet

Element of Planets

Earth

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Spirituality, Healing

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Tough

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.20-3.262.67-2.73

1 7.18

👆🏻

Fracture

Splintery

Conchoidal

Cleavage

{010} perfect

Perfect on [10 1 1] three directions with angle of 74° 55

Mohs Hardness

6-7.53

2 10

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Chemical Composition

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

CaCO 3Ulrich Henn and Claudio C.

Optical Properties

Luster

Vitreous, Subadamantine, Silky

Vitreous, Pearly

Pleochroism

Colourless to pale brown to yellow

Dispersion

0.020.15

0.005 1

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Transparency

Transparent, Translucent

Refractive Index

1.653-1.6851.486-1.658

1 3.25

👆🏻

Optic Character

Crystal System

Orthorhombic

Trigonal

Birefringence

0.020-0.0220.154-0.174

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Creativity

Emotional Intelligence

Healing

Emotional healing

Qualities Associated

Creativity

Amplification

Sillimanite Vs Calcite Fracture

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

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Sillimanite Vs Calcite Luster

A primary knowledge about Sillimanite vs Calcite 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. Calcite, on other hand, exhibits Vitreous and Pearly luster.