Gahnospinel

Poldervaartite

Gahnospinel Vs Poldervaartite

Gahnospinel

Poldervaartite

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1 Astrology

1.1 Origin

Sri Lanka

Southern and central Africa

1.2 Color

Blue

Colorless, White

1.3 Streak

Not Available

White

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

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

3.65-4.552.91

1 7.18

2.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

Handbook of mineralogy (2001)

2.6 Cleavage

None, but may exhibit slight parting

None

2.7 Mohs Hardness

7.5-8Not Available

2 10

2.8 Chemical Composition

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

(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

3 Optical Properties

3.1 Luster

Vitreous

3.2 Pleochroism

AbsentWalter Schumann

Weak: colorless light gray bluish grayAnthony et al

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

Gemmological Tables (2004)

Transparent

3.5 Refractive Index

1.735-1.7901.634-1.656

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Isometric

Not Available

3.8 Birefringence

Not AvailableNot Available

0 0.296

3.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Transparent

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 Poldervaartite Fracture

Fracture is an important parameter when you compare Gahnospinel and Poldervaartite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gahnospinel Vs Poldervaartite 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). Poldervaartite fracture is Handbook of mineralogy (2001).

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Gahnospinel Vs Poldervaartite Luster

A primary knowledge about Gahnospinel vs Poldervaartite 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. Poldervaartite, on other hand, exhibits Vitreous luster.