Alexandrite

Cobaltite

Alexandrite Vs Cobaltite

Alexandrite

Cobaltite

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1 Astrology

1.1 Origin

Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Color: color change, from bluish green (daylight) to purple, red or brown (incandescent light), Hardness: 8, Refractive index: 1.74 1.77, Density: 3.68 3.80, Chemical composition: BeAl2O4, Crystal structure: orthorhombic, Origins: Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma

Canada

1.2 Color

Green

Reddish, White, Violet, gray, Black, Reddish, White, Violet, gray, Black

1.3 Streak

Not Available

Black

1.4 For which Rashi?

Scorpio

Not Available

1.5 Planet

Venus

Not Available

1.6 Element of Planets

Earth

Not Available

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Projective, Receptive

Not Available

1.9 Deities

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Love

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

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

3.69-3.816.3

1 7.18

2.5 Fracture

Not Available

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

2.6 Cleavage

1,1 ; 3,2.

{100} Good, {010} Good, {001} Good

2.7 Mohs Hardness

8.55.5

2 10

2.8 Chemical Composition

BeAl ₂ O ₄

CoAsSAnthony et al , Handbook of mineralogy (2001)

3 Optical Properties

3.1 Luster

Vitreous

Not Available

3.2 Pleochroism

Not Available

Very weak

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

Transparent, Transparent to nearly opaque

Gems

3.5 Refractive Index

1.739-1.770Not Available

1 3.25

3.6 Optic Character

Biaxial/+

Not Available

3.7 Crystal System

Orthorhombic

Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: P ca21

3.8 Birefringence

0.007-0.010Not Available

0 0.296

3.9 Clarity

Transparent

Gems

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

Alexandrite Vs Cobaltite Fracture

Fracture is an important parameter when you compare Alexandrite and Cobaltite Physical Properties. It is necessary to understand the significance of these properties, before you compare Alexandrite Vs Cobaltite 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. Cobaltite fracture is Brittle, Handbook of mineralogy (2001) More from other references, Handbook of mineralogy (2001) More from other references, Metallic, UnevenAnthony et al and UnevenAnthony et al.

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Alexandrite Vs Cobaltite Luster

A primary knowledge about Alexandrite vs Cobaltite 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. Alexandrite exhibits Vitreous luster.