Sillimanite

Sugilite

Sillimanite Vs Sugilite

Sillimanite

Sugilite

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Astrology

Origin

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

Canada, Southern and central Africa, Italy, Australia, India

Color

Blue, Green, Brownish, Greenish, Colorless, gray

Violet, Brownish, Yellow, Reddish, Pale pink

Streak

White

For which Rashi?

Virgo

Planet

Mercury, Jupiter

Element of Planets

Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Not to wear with

Powers

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Tough

Solubility

Durability

Specific Gravity

3.20-3.262.69-2.79

1 7.18

👆🏻

Fracture

Splintery

Conchoidal

Cleavage

{010} perfect

Poor on {0001}

Mohs Hardness

6-7.55.5-6.5

2 10

👆🏻

Chemical Composition

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

KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Optical Properties

Luster

Vitreous, Subadamantine, Silky

Vitreous

Pleochroism

Colourless to pale brown to yellow

Weak

Dispersion

0.020.02

0.005 1

👆🏻

Transparency

Transparent, Translucent

Translucent

Refractive Index

1.653-1.6851.607-1.612

1 3.25

👆🏻

Optic Character

Crystal System

Orthorhombic

Hexagonal

Birefringence

0.020-0.0220.003

0 0.296

👆🏻

Clarity

Transparent

Translucent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Excellent

Reproductive

Digestive

Psychology

Creativity

Spirituality

Healing

Emotional healing

Qualities Associated

Creativity

Spiritual Protection

Sillimanite Vs Sugilite Fracture

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

Compare Blue Gemstones

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Sillimanite Vs Sugilite Luster

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