Verdelite

Covellite

Verdelite Vs Covellite

Verdelite

Covellite

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1 Astrology

1.1 Origin

Afghanistan, Brazil, Mozambique, Sri Lanka, USA

Mexico

1.2 Color

Green, Brown

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

2.90-3.404.6-4.76

1 7.18

2.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

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

2.6 Cleavage

Not Available

Perfect on {0001}

2.7 Mohs Hardness

7-7.5Not Available

2 10

2.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

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

3 Optical Properties

3.1 Luster

Not Available

Resinous

3.2 Pleochroism

Strong: dark green yellow

Marked

3.3 Dispersion

0.02NA

0.007 1

3.4 Transparency

Transparent, Translucent

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

3.5 Refractive Index

1.614-1.6661.45-2.62

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Not Available

Hexagonal

3.8 Birefringence

0.014-0.040Not 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

Verdelite Vs Covellite Fracture

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

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Verdelite Vs Covellite Luster

A primary knowledge about Verdelite 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.