Siderite

Sillimanite

Siderite Vs Sillimanite

Siderite

Sillimanite

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Astrology

Origin

Brazil

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

Color

Yellow, Brown, gray, Greenish

Blue, Green, Brownish, Greenish, Colorless, gray

Streak

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

Brittle

Tough

Solubility

Durability

Specific Gravity

3.83-3.893.20-3.26

1 7.18

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Fracture

Uneven, Conchoidal

Splintery

Cleavage

Perfect on {01 1 1}

{010} perfect

Mohs Hardness

3.5-4.56-7.5

2 10

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Chemical Composition

Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Optical Properties

Luster

Pearly

Vitreous, Subadamantine, Silky

Pleochroism

Colourless to pale brown to yellow

Dispersion

0.040.02

0.005 1

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Transparency

Transparent, Translucent

Refractive Index

1.633-1.8751.653-1.685

1 3.25

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Optic Character

Crystal System

Trigonal

Orthorhombic

Birefringence

0.2420.020-0.022

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Confidence

Creativity

Healing

Emotional healing

Qualities Associated

Grounding

Creativity

Siderite Vs Sillimanite Fracture

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

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Siderite Vs Sillimanite Luster

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