Gahnospinel

Petalite

Gahnospinel Vs Petalite

Gahnospinel

Petalite

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1 Astrology

1.1 Origin

Sri Lanka

Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia

1.2 Color

Blue

Colorless, gray, Yellow, White

1.3 Streak

Not Available

Colorless

1.4 For which Rashi?

Sagittarius, Scorpio

Not Available

1.5 Planet

Pluto

Not Available

1.6 Element of Planets

Not Available

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Projective

Not Available

1.9 Deities

Hephaestus

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Money

Not Available

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Not Available

Brittle

2.2 Solubility

Not Available

insoluble

2.3 Durability

Not Available

2.4 Specific Gravity

3.65-4.552.40

1 7.18

2.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

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

2.6 Cleavage

None, but may exhibit slight parting

Perfect on {001}, poor on {201} with 38.5° angle between the two

2.7 Mohs Hardness

7.5-86-6.5

2 10

2.8 Chemical Composition

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

LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

3 Optical Properties

3.1 Luster

Vitreous

Vitreous, Pearly

3.2 Pleochroism

AbsentWalter Schumann

3.3 Dispersion

NA0.01

0.007 1

3.4 Transparency

Gemmological Tables (2004)

Gemmological Tables (2004) More from other references

3.5 Refractive Index

1.735-1.7901.502-1.523

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Isometric

monoclinic

3.8 Birefringence

Not Available0.012-0.016

0 0.296

3.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

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 Petalite Fracture

Fracture is an important parameter when you compare Gahnospinel and Petalite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gahnospinel Vs Petalite 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). Petalite fracture is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references and Subconchoidal.

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Gahnospinel Vs Petalite Luster

A primary knowledge about Gahnospinel vs Petalite 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. Petalite, on other hand, exhibits Pearly and Vitreous luster.