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Tanzanite
Tanzanite

Sillimanite
Sillimanite



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Tanzanite
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Sillimanite

Tanzanite Vs Sillimanite

Astrology

Origin

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

Color

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

Streak

White, Colorless
White

For which Rashi?

Sagittarius, Pisces, Virgo
-

Planet

-
-

Element of Planets

Air, Water, Earth
-

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

-
-

Not to wear with

-
-

Powers

Love, Healing
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

-
Tough

Solubility

-
-

Durability

Hard
-

Specific Gravity

3.353.20-3.26
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Splintery

Cleavage

Perfect {010}, imperfect {100}
{010} perfect

Mohs Hardness

6.5-76-7.5
2 10
👆🏻

Chemical Composition

Ca2Al3(SiO4)3(OH)
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous
Vitreous, Subadamantine, Silky

Pleochroism

Present
Colourless to pale brown to yellow

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

Transparent, Translucent, Transparent to translucent
Transparent, Translucent

Refractive Index

1.685-1.7071.653-1.685
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.006-0.0180.020-0.022
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus
-

Cardiovascular

-
-

Respiratory

Excellent
Good

Reproductive

-
-

Digestive

-
-

Psychology

Intuition
Creativity

Healing

Emotional healing
Emotional healing

Qualities Associated

Communication
Creativity

Tanzanite Vs Sillimanite Fracture

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

Tanzanite Vs Sillimanite Luster

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