Prasiolite

Lapis lazuli

Prasiolite Vs Lapis lazuli

Prasiolite

Lapis lazuli

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1 Astrology

1.1 Origin

Canada

Afghanistan

1.2 Color

Green

Violet, Blue, White

1.3 Streak

Not Available

Blue

1.4 For which Rashi?

Libra, Sagittarius, Taurus

Sagittarius

1.5 Planet

Jupiter

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

Goddess

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

2.65

2.50-3.00

2.5 Fracture

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

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

2.6 Cleavage

3,1

3,6

2.7 Mohs Hardness

5.5

2.8 Chemical Composition

SiO 2Ulrich Henn and Claudio C.

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

Very weak: light green pale greenWalter Schumann

AbsentWalter Schumann

3.3 Dispersion

Albite

⊕

▶

▼

0.01

Rank: 27 (Overall)▶

None

Rank: N/A (Overall)▶

▲

Fluorite

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▶

0.044 (Anglesite)

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3.4 Transparency

Transparent, Translucent

Opaque

3.5 Refractive Index

1.544-1.553

1.500-1.670

3.6 Optic Character

Not Available

3.7 Crystal System

Trigonal

3.8 Birefringence

0.009

Not Available

3.9 Clarity

Transparent

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

Prasiolite Vs Lapis lazuli Fracture

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

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Prasiolite Vs Lapis lazuli Luster

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