Prehnite

Lapis lazuli

Prehnite Vs Lapis lazuli

Prehnite

Lapis lazuli

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1 Astrology

1.1 Origin

Australia, Southern and central Africa, green, brown, Australia, France, green, brown, Australia, France

Afghanistan

1.2 Color

Green, Colorless, gray, Yellow, White

Violet, Blue, White

1.3 Streak

Colorless

Blue

1.4 For which Rashi?

Libra

Sagittarius

1.5 Planet

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

Freya

Venus

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

Protection, Courage

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Brittle

Not Available

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

2.80-2.952.50-3.00

1 7.18

2.5 Fracture

Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

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

2.6 Cleavage

Distinct on [001]

3,6

2.7 Mohs Hardness

6-6.55.5

2 10

2.8 Chemical Composition

Ca₂Al₂Si₃O₁₂(OH)

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

AbsentWalter Schumann

3.3 Dispersion

NoneNone

0.007 1

3.4 Transparency

Translucent

Opaque

3.5 Refractive Index

1.611-1.6731.500-1.670

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Orthorhombic

Trigonal

3.8 Birefringence

0.021-0.033Not Available

0 0.296

3.9 Clarity

TranslucentHerve Nicolas Lazzarelli

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

Prehnite Vs Lapis lazuli Fracture

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

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Prehnite Vs Lapis lazuli Luster

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