Lapis lazuli

Dumortierite

Lapis lazuli Vs Dumortierite

Lapis lazuli

Dumortierite

Add ⊕

1 Astrology

1.1 Origin

Afghanistan

Southern and central Africa, violet, blue, violet, blue

1.2 Color

Violet, Blue, White

Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink

1.3 Streak

Blue

White

1.4 For which Rashi?

Sagittarius

Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius

1.5 Planet

Venus

Saturn

1.6 Element of Planets

Water

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Receptive

1.9 Deities

Venus

Isis

1.10 Not to wear with

Not Available

1.11 Powers

Protection, Courage

Healing

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Not Available

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

2.50-3.003.26-3.41

1 7.18

2.5 Fracture

Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

2.6 Cleavage

3,6

Distinct on {100}, poor on {110}; parting on {001}

2.7 Mohs Hardness

5.57-8.5

2 10

2.8 Chemical Composition

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

AlAl₆O₃BSi₃O₁₈

3 Optical Properties

3.1 Luster

Vitreous, Greasy

Vitreous

3.2 Pleochroism

AbsentWalter Schumann

Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue

3.3 Dispersion

NoneNone

0.007 1

3.4 Transparency

Opaque

Translucent, Translucent to opaque

3.5 Refractive Index

1.500-1.6701.669-1.723

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Trigonal

Orthorhombic

3.8 Birefringence

Not Available0.011-0.037

0 0.296

3.9 Clarity

Gemstones of the world (2001)

Translucent

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

Lapis lazuli Vs Dumortierite Fracture

Fracture is an important parameter when you compare Lapis lazuli and Dumortierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli Vs Dumortierite 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 ConchoidalWalter Schumann, Gemstones of the world (2001) and Uneven-Conchoidal. Dumortierite fracture is ConchoidalWalter Schumann, Fibrous and Gemstones of the world (2001) More from other references.

Compare Gems for Sagittarius

Lapis lazuli Vs Spinel

Lapis lazuli Vs Smoky Quartz

Lapis lazuli Vs Sodalite

Lapis lazuli Vs Dumortierite Luster

A primary knowledge about Lapis lazuli vs Dumortierite 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 Greasy and Vitreous luster. Dumortierite, on other hand, exhibits Vitreous luster.