Vivianite

Sillimanite

Vivianite Vs Sillimanite

Vivianite

Sillimanite

Add ⊕

1 Astrology

1.1 Origin

Southern and central Africa

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

1.2 Color

Blue, Green, Colorless

Blue, Green, Brownish, Greenish, Colorless, gray

1.3 Streak

White

1.4 For which Rashi?

Not Available

1.5 Planet

Not Available

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

1.9 Deities

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Not Available

Tough

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

2.64-2.703.20-3.26

1 7.18

2.5 Fracture

(e.g. graphite).

Splintery

2.6 Cleavage

{010} Perfect

{010} perfect

2.7 Mohs Hardness

Not Available6-7.5

2 10

2.8 Chemical Composition

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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

3 Optical Properties

3.1 Luster

Vitreous, Pearly

Vitreous, Subadamantine, Silky

3.2 Pleochroism

Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue

Colourless to pale brown to yellow

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

Transparent

Transparent, Translucent

3.5 Refractive Index

1.560-1.6401.653-1.685

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Not Available

Orthorhombic

3.8 Birefringence

0.054-0.0750.020-0.022

0 0.296

3.9 Clarity

Transparent

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

Vivianite Vs Sillimanite Fracture

Fracture is an important parameter when you compare Vivianite and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Vivianite 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 Vivianite is (e.g. graphite).. Sillimanite fracture is Splintery.

Compare Blue Gemstones

Vivianite Vs Garnet Malaia

Vivianite Vs Zircon

Vivianite Vs Fancy Diamond

Vivianite Vs Sillimanite Luster

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