Agate

Covellite

Agate Vs Covellite

Agate

Covellite

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1 Astrology

1.1 Origin

Brazil

Mexico

1.2 Color

Yellow, Red, White, White, Colorless, Blue, Red, Green, Yellow, pink, Black, Blue, Brown

Blue, Blue, Black

1.3 Streak

White

Grey, Black, gray

1.4 For which Rashi?

Gemini

Not Available

1.5 Planet

Not Available

1.6 Element of Planets

Water

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

Bragi

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Courage, Love, Healing, Protection

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

2.60-2.644.6-4.76

1 7.18

2.5 Fracture

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

2.6 Cleavage

Indiscernible

Perfect on {0001}

2.7 Mohs Hardness

6.5-7Not Available

2 10

2.8 Chemical Composition

SiO₂

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

3 Optical Properties

3.1 Luster

Vitreous

Resinous

3.2 Pleochroism

Absent

Marked

3.3 Dispersion

NoneNA

0.007 1

3.4 Transparency

Translucent

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

3.5 Refractive Index

1.530-1.5431.45-2.62

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Trigonal

Hexagonal

3.8 Birefringence

0.004Not Available

0 0.296

3.9 Clarity

Translucent

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

Agate Vs Covellite Fracture

Fracture is an important parameter when you compare Agate and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Agate 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 Agate is Conchoidal, Gemstones of the world (2001) and UnevenWalter Schumann. Covellite fracture is Brittle, Gemstones (2009), Gemstones (2009), Metallic and UnevenArthur Thomas.

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Agate Vs Covellite Luster

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