Gahnospinel

Lapis lazuli

Gahnospinel Vs Lapis lazuli

Gahnospinel

Lapis lazuli

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1 Astrology

1.1 Origin

Sri Lanka

Afghanistan

1.2 Color

Blue

Violet, Blue, White

1.3 Streak

Not Available

Blue

1.4 For which Rashi?

Sagittarius, Scorpio

Sagittarius

1.5 Planet

Pluto

Venus

1.6 Element of Planets

Not Available

Water

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Projective

Receptive

1.9 Deities

Hephaestus

Venus

1.10 Not to wear with

Not Available

1.11 Powers

Money

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

3.65-4.552.50-3.00

1 7.18

2.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

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

2.6 Cleavage

None, but may exhibit slight parting

3,6

2.7 Mohs Hardness

7.5-85.5

2 10

2.8 Chemical Composition

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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

NANone

0.007 1

3.4 Transparency

Gemmological Tables (2004)

Opaque

3.5 Refractive Index

1.735-1.7901.500-1.670

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Isometric

Trigonal

3.8 Birefringence

Not AvailableNot Available

0 0.296

3.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

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

Gahnospinel Vs Lapis lazuli Fracture

Fracture is an important parameter when you compare Gahnospinel and Lapis lazuli Physical Properties. It is necessary to understand the significance of these properties, before you compare Gahnospinel 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 Gahnospinel is ConchoidalArthur Thomas and Gemstones (2009). Lapis lazuli fracture is ConchoidalWalter Schumann, Gemstones of the world (2001) and Uneven-Conchoidal.

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Gahnospinel Vs Lapis lazuli Luster

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