Lapis lazuli

Sillimanite

Lapis lazuli Vs Sillimanite

Lapis lazuli

Sillimanite

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Astrology

Origin

Afghanistan

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

Color

Violet, Blue, White

Blue, Green, Brownish, Greenish, Colorless, gray

Streak

Blue

White

For which Rashi?

Sagittarius

Planet

Venus

Element of Planets

Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Venus

Not to wear with

Powers

Protection, Courage

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Tough

Solubility

Durability

Specific Gravity

2.50-3.003.20-3.26

1 7.18

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Fracture

Uneven-Conchoidal, ConchoidalWalter Schumann

Splintery

Cleavage

3,6

{010} perfect

Mohs Hardness

5.56-7.5

2 10

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Chemical Composition

The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄

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

Optical Properties

Luster

Vitreous, Greasy

Vitreous, Subadamantine, Silky

Pleochroism

Colourless to pale brown to yellow

Dispersion

-0.02

0.005 1

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Transparency

Opaque

Transparent, Translucent

Refractive Index

1.500-1.6701.653-1.685

1 3.25

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Optic Character

Crystal System

Trigonal

Orthorhombic

Birefringence

-99990.020-0.022

0 0.296

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Clarity

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Supports heart health

Respiratory

Good

Reproductive

Digestive

Psychology

Wisdom

Creativity

Healing

Emotional healing

Qualities Associated

Inner Truth

Creativity

Lapis lazuli Vs Sillimanite Fracture

Fracture is an important parameter when you compare Lapis lazuli and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli 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 Lapis lazuli is Uneven-Conchoidal and ConchoidalWalter Schumann. Sillimanite fracture is Splintery.

Compare Gems for Sagittarius

Lapis lazuli Vs Ruby

Lapis lazuli Vs Smoky Quartz

Lapis lazuli Vs Sodalite

Lapis lazuli Vs Sillimanite Luster

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