Sillimanite

Jet

Sillimanite Vs Jet

Sillimanite

Jet

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1 Astrology

1.1 Origin

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

Spain

1.2 Color

Blue, Green, Brownish, Greenish, Colorless, gray

Black

1.3 Streak

White

Not Available

1.4 For which Rashi?

Not Available

Capricorn

1.5 Planet

Not Available

Saturn

1.6 Element of Planets

Not Available

Earth

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Not Available

Receptive

1.9 Deities

Not Available

Cybele

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

Protection

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Tough

Not Available

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

3.20-3.261.19-1.35

1 7.18

2.5 Fracture

Splintery

ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

2.6 Cleavage

{010} perfect

Not Available

2.7 Mohs Hardness

6-7.52.5-4

2 10

2.8 Chemical Composition

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

Not Available

3 Optical Properties

3.1 Luster

Vitreous, Subadamantine, Silky

Waxy

3.2 Pleochroism

Colourless to pale brown to yellow

AbsentWalter Schumann

3.3 Dispersion

NANone

0.007 1

3.4 Transparency

Transparent, Translucent

Gemmological Tables (2004) More from other references

3.5 Refractive Index

1.653-1.6851.640-1.680

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Orthorhombic

Amorphous

3.8 Birefringence

0.020-0.022Not Available

0 0.296

3.9 Clarity

Transparent

Gemmological Tables (2004) More from other references

4 Benefits

4.1 Physical

4.1.1 Neurological

Not Available

4.1.2 Cardiovascular

Not Available

4.1.3 Respiratory

Not Available

4.1.4 Reproductive

Not Available

4.1.5 Digestive

Not Available

4.2 Psychology

Not Available

4.3 Healing

Not Available

4.4 Qualities Associated

Not Available

Sillimanite Vs Jet Fracture

Fracture is an important parameter when you compare Sillimanite and Jet Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Jet 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. Jet fracture is ConchoidalWalter Schumann, ConchoidalWalter Schumann and Gemstones of the world (2001) More from other references.

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Sillimanite Vs Jet Luster

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