Dumortierite

Lapis lazuli

Dumortierite Vs Lapis lazuli

Dumortierite

Lapis lazuli

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1 Astrology

1.1 Origin

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

Afghanistan

1.2 Color

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

Violet, Blue, White

1.3 Streak

White

Blue

1.4 For which Rashi?

Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius

Sagittarius

1.5 Planet

Saturn

Venus

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

Isis

Venus

1.10 Not to wear with

Not Available

1.11 Powers

Healing

Protection, Courage

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

3.26-3.412.50-3.00

1 7.18

2.5 Fracture

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

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

2.6 Cleavage

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

3,6

2.7 Mohs Hardness

7-8.55.5

2 10

2.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

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

3 Optical Properties

3.1 Luster

Vitreous

Vitreous, Greasy

3.2 Pleochroism

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

AbsentWalter Schumann

3.3 Dispersion

NoneNone

0.007 1

3.4 Transparency

Translucent, Translucent to opaque

Opaque

3.5 Refractive Index

1.669-1.7231.500-1.670

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Orthorhombic

Trigonal

3.8 Birefringence

0.011-0.037Not Available

0 0.296

3.9 Clarity

Translucent

Gemstones of the world (2001)

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

Dumortierite Vs Lapis lazuli Fracture

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

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Dumortierite Vs Lapis lazuli Luster

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