Sillimanite

Gahnospinel

Sillimanite Vs Gahnospinel

Sillimanite

Gahnospinel

Add ⊕

1 Astrology

1.1 Origin

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

Sri Lanka

1.2 Color

Blue, Green, Brownish, Greenish, Colorless, gray

Blue

1.3 Streak

White

Not Available

1.4 For which Rashi?

Not Available

Sagittarius, Scorpio

1.5 Planet

Not Available

Pluto

1.6 Element of Planets

Not Available

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Not Available

Projective

1.9 Deities

Not Available

Hephaestus

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

Money

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Tough

Not Available

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

3.20-3.263.65-4.55

1 7.18

2.5 Fracture

Splintery

ConchoidalArthur Thomas, Gemstones (2009)

2.6 Cleavage

{010} perfect

None, but may exhibit slight parting

2.7 Mohs Hardness

6-7.57.5-8

2 10

2.8 Chemical Composition

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

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

3 Optical Properties

3.1 Luster

Vitreous, Subadamantine, Silky

Vitreous

3.2 Pleochroism

Colourless to pale brown to yellow

AbsentWalter Schumann

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

Transparent, Translucent

Gemmological Tables (2004)

3.5 Refractive Index

1.653-1.6851.735-1.790

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Orthorhombic

Isometric

3.8 Birefringence

0.020-0.022Not Available

0 0.296

3.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

4 Benefits

4.1 Physical

4.1.1 Neurological

Not Available

4.1.2 Cardiovascular

Not Available

4.1.3 Respiratory

Not Available

4.1.4 Reproductive

Not Available

4.1.5 Digestive

Not Available

4.2 Psychology

Not Available

4.3 Healing

Not Available

4.4 Qualities Associated

Not Available

Sillimanite Vs Gahnospinel Fracture

Fracture is an important parameter when you compare Sillimanite and Gahnospinel Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Gahnospinel 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. Gahnospinel fracture is ConchoidalArthur Thomas and Gemstones (2009).

Compare Blue Gemstones

Sillimanite Vs Starlite

Sillimanite Vs Tanzanite

Sillimanite Vs Strontium Titanate

Sillimanite Vs Gahnospinel Luster

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