Sillimanite

Feldspar

Sillimanite Vs Feldspar

Sillimanite

Feldspar

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1 Astrology

1.1 Origin

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

Southern and central Africa

1.2 Color

Blue, Green, Brownish, Greenish, Colorless, gray

Yellow, Green

1.3 Streak

White

1.4 For which Rashi?

Not Available

1.5 Planet

Not Available

1.6 Element of Planets

Not Available

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Not Available

1.9 Deities

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

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

3.20-3.262.56-2.75

1 7.18

2.5 Fracture

Splintery

Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)

2.6 Cleavage

{010} perfect

two or three

2.7 Mohs Hardness

6-7.56-6.5

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

Vitreous

3.2 Pleochroism

Colourless to pale brown to yellow

None

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

Transparent, Translucent

3.5 Refractive Index

1.653-1.6851.518-1.570

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Orthorhombic

Triclinic or monoclinic

3.8 Birefringence

0.020-0.0220.008-0.010

0 0.296

3.9 Clarity

Transparent

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 Feldspar Fracture

Fracture is an important parameter when you compare Sillimanite and Feldspar Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Feldspar 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. Feldspar fracture is Conchoidal, Conchoidal, Gemstones of the world (2001), Uneven and Uneven.

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Sillimanite Vs Feldspar Luster

A primary knowledge about Sillimanite vs Feldspar 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. Feldspar, on other hand, exhibits Vitreous luster.