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Sillimanite
Sillimanite

Stibiotantalite
Stibiotantalite



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Sillimanite
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Stibiotantalite

Sillimanite Vs Stibiotantalite

Astrology

Origin

USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Mozambique, Southern and central Africa

Color

Blue, Green, Brownish, Greenish, Colorless, gray
Yellow, Reddish, Brown, Greenish

Streak

White
Yellow

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

3.20-3.26-9999
1 7.18
👆🏻

Fracture

Splintery
Conchoidal

Cleavage

{010} perfect
{???} Perfect

Mohs Hardness

6-7.55.5-6
2 10
👆🏻

Chemical Composition

Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
SbTaO 4Ulrich Henn and Claudio C.

Optical Properties

Luster

Vitreous, Subadamantine, Silky
Adamantine

Pleochroism

Colourless to pale brown to yellow
-

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.653-1.6852.37-2.45
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.020-0.0220.08
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Benefits

Physical

Neurological

-
-

Cardiovascular

-
-

Respiratory

Good
Good

Reproductive

-
-

Digestive

-
Soothes the digestive system

Psychology

Creativity
Creativity

Healing

Emotional healing
Physical healing

Qualities Associated

Creativity
Creativity

Sillimanite Vs Stibiotantalite Fracture

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

Sillimanite Vs Stibiotantalite Luster

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