Jet

Lapis lazuli

Jet Vs Lapis lazuli

Jet

Lapis lazuli

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1 Astrology

1.1 Origin

Spain

Afghanistan

1.2 Color

Black

Violet, Blue, White

1.3 Streak

Not Available

Blue

1.4 For which Rashi?

Capricorn

Sagittarius

1.5 Planet

Saturn

Venus

1.6 Element of Planets

Earth

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

Cybele

Venus

1.10 Not to wear with

Not Available

1.11 Powers

Protection

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

1.19-1.352.50-3.00

1 7.18

2.5 Fracture

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

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

2.6 Cleavage

Not Available

3,6

2.7 Mohs Hardness

2.5-45.5

2 10

2.8 Chemical Composition

Not Available

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

3 Optical Properties

3.1 Luster

Waxy

Vitreous, Greasy

3.2 Pleochroism

AbsentWalter Schumann

3.3 Dispersion

NoneNone

0.007 1

3.4 Transparency

Gemmological Tables (2004) More from other references

Opaque

3.5 Refractive Index

1.640-1.6801.500-1.670

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Amorphous

Trigonal

3.8 Birefringence

Not AvailableNot Available

0 0.296

3.9 Clarity

Gemmological Tables (2004) More from other references

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

Jet Vs Lapis lazuli Fracture

Fracture is an important parameter when you compare Jet and Lapis lazuli Physical Properties. It is necessary to understand the significance of these properties, before you compare Jet 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 Jet is ConchoidalWalter Schumann, ConchoidalWalter Schumann 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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Jet Vs Lapis lazuli Luster

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