Allanite

Covellite

Allanite Vs Covellite

Allanite

Covellite

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1 Astrology

1.1 Origin

Not Available, Southern and central Africa

Mexico

1.2 Color

Brown, Black

Blue, Blue, Black

1.3 Streak

Not Available

Grey, Black, gray

1.4 For which Rashi?

Not Available

1.5 Planet

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

Not Available

1.9 Deities

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

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

Flexible

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

3.40-4.204.6-4.76

1 7.18

2.5 Fracture

Not Available

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

2.6 Cleavage

Not Available

Perfect on {0001}

2.7 Mohs Hardness

Not AvailableNot Available

2 10

2.8 Chemical Composition

Not Available

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

3 Optical Properties

3.1 Luster

Not Available

Resinous

3.2 Pleochroism

Not Available

Marked

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

Not Available

OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references

3.5 Refractive Index

11.45-2.62

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Not Available

Hexagonal

3.8 Birefringence

0.013-0.036Not Available

0 0.296

3.9 Clarity

Not Available

OpaqueAnthony et al

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

Allanite Vs Covellite Fracture

Fracture is an important parameter when you compare Allanite and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Allanite Vs Covellite 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. Covellite fracture is Brittle, Gemstones (2009), Gemstones (2009), Metallic and UnevenArthur Thomas.

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Allanite Vs Covellite Luster

A primary knowledge about Allanite vs Covellite 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. Covellite, on other hand, exhibits Resinous luster.