Andalusite

Sillimanite

Andalusite Vs Sillimanite

Andalusite

Sillimanite

Add ⊕

Astrology

Origin

Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)

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

Color

Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red

Blue, Green, Brownish, Greenish, Colorless, gray

Streak

White

For which Rashi?

Planet

Venus

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

3.05-3.213.20-3.26

1 7.18

👆🏻

Fracture

Uneven, Subconchoidal, Splintery

Splintery

Cleavage

Good on {110}, poor on {100}

{010} perfect

Mohs Hardness

7.56-7.5

2 10

👆🏻

Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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

Optical Properties

Luster

Vitreous, Greasy

Vitreous, Subadamantine, Silky

Pleochroism

strongly trichroic

Colourless to pale brown to yellow

Dispersion

0.020.02

0.005 1

👆🏻

Transparency

Transparent, Translucent

Refractive Index

1.627-1.6501.653-1.685

1 3.25

👆🏻

Optic Character

Crystal System

Orthorhombic

Birefringence

0.009-0.0100.020-0.022

0 0.296

👆🏻

Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Respiratory

Excellent

Good

Reproductive

Digestive

Psychology

Perception

Creativity

Healing

Physical healing

Emotional healing

Qualities Associated

Self-Realization

Creativity

Andalusite Vs Sillimanite Fracture

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

Compare Brown Gemstones

Andalusite Vs Apatite

Andalusite Vs Apophyllite

Andalusite Vs Aragonite

Andalusite Vs Sillimanite Luster

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