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Glaucophane
Glaucophane

Sillimanite
Sillimanite



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Glaucophane
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Sillimanite

Glaucophane Vs Sillimanite

Astrology

Origin

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

Color

Blue, gray, Black
Blue, Green, Brownish, Greenish, Colorless, gray

Streak

Blue
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

-
Tough

Solubility

-
-

Durability

-
-

Specific Gravity

3-3.153.20-3.26
1 7.18
👆🏻

Fracture

Conchoidal
Splintery

Cleavage

Good on [110] and on [001]
{010} perfect

Mohs Hardness

6.0-6.56-7.5
2 10
👆🏻

Chemical Composition

[ ]Na2(Mg3Al2)Si8O22(OH)2
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous, Pearly
Vitreous, Subadamantine, Silky

Pleochroism

Strong
Colourless to pale brown to yellow

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.606-1.6371.653-1.685
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

-99990.020-0.022
0 0.296
👆🏻

Clarity

-
Transparent

Benefits

Physical

Neurological

-
-

Cardiovascular

-
-

Respiratory

Good
Good

Reproductive

-
-

Digestive

-
-

Psychology

Communication
Creativity

Healing

Emotional healing
Emotional healing

Qualities Associated

Peace
Creativity

Glaucophane Vs Sillimanite Fracture

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

Glaucophane Vs Sillimanite Luster

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