Pollucite

Covellite

Pollucite Vs Covellite

Pollucite

Covellite

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1 Astrology

1.1 Origin

Afghanistan, Southern and central Africa

Mexico

1.2 Color

Grey, White, Colorless, gray, Pale pink, Blue

Blue, Blue, Black

1.3 Streak

White

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

Brittle

Flexible

2.2 Solubility

Readily soluble in HF

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

2.86-2.944.6-4.76

1 7.18

2.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

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

2.6 Cleavage

None observed

Perfect on {0001}

2.7 Mohs Hardness

6.5-7Not Available

2 10

2.8 Chemical Composition

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

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

3 Optical Properties

3.1 Luster

Vitreous, Greasy

Resinous

3.2 Pleochroism

Not Available

Marked

3.3 Dispersion

0.01NA

0.007 1

3.4 Transparency

Transparent, Translucent

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

3.5 Refractive Index

1.517-1.5251.45-2.62

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Isometric

Hexagonal

3.8 Birefringence

Not AvailableNot Available

0 0.296

3.9 Clarity

Transparent

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

Pollucite Vs Covellite Fracture

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

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Pollucite Vs Covellite Luster

A primary knowledge about Pollucite 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. Pollucite exhibits Greasy and Vitreous luster. Covellite, on other hand, exhibits Resinous luster.