Covellite

Holmquistite

Covellite Vs Holmquistite

Covellite

Holmquistite

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1 Astrology

1.1 Origin

Mexico

Southern and central Africa

1.2 Color

Blue, Blue, Black

Black, Blue, Violet

1.3 Streak

Grey, Black, gray

White

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

Flexible

Not Available

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

4.6-4.762.95-3.13

1 7.18

2.5 Fracture

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

Not Available

2.6 Cleavage

Perfect on {0001}

{210} Perfect

2.7 Mohs Hardness

Not Available5-6

2 10

2.8 Chemical Composition

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

Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

3 Optical Properties

3.1 Luster

Resinous

Vitreous

3.2 Pleochroism

Marked

Strong in shades of violet when dark-colored.Anthony et al

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

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

Transparent

3.5 Refractive Index

1.45-2.621.622-1.666

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Hexagonal

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

3.8 Birefringence

Not AvailableNot Available

0 0.296

3.9 Clarity

OpaqueAnthony et al

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

Covellite Vs Holmquistite Fracture

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

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Covellite Vs Holmquistite Luster

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