Jet

Alexandrite

Jet Vs Alexandrite

Jet

Alexandrite

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1 Astrology

1.1 Origin

Spain

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

1.2 Color

Black

Green

1.3 Streak

Not Available

1.4 For which Rashi?

Capricorn

Scorpio

1.5 Planet

Saturn

Venus

1.6 Element of Planets

Earth

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Receptive

Projective, Receptive

1.9 Deities

Cybele

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Protection

Love

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

1.19-1.353.69-3.81

1 7.18

2.5 Fracture

ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

Not Available

2.6 Cleavage

Not Available

1,1 ; 3,2.

2.7 Mohs Hardness

2.5-48.5

2 10

2.8 Chemical Composition

Not Available

BeAl ₂ O ₄

3 Optical Properties

3.1 Luster

Waxy

Vitreous

3.2 Pleochroism

AbsentWalter Schumann

Not Available

3.3 Dispersion

NoneNA

0.007 1

3.4 Transparency

Gemmological Tables (2004) More from other references

Transparent, Transparent to nearly opaque

3.5 Refractive Index

1.640-1.6801.739-1.770

1 3.25

3.6 Optic Character

Not Available

Biaxial/+

3.7 Crystal System

Amorphous

Orthorhombic

3.8 Birefringence

Not Available0.007-0.010

0 0.296

3.9 Clarity

Gemmological Tables (2004) More from other references

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

Jet Vs Alexandrite Fracture

Fracture is an important parameter when you compare Jet and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Jet Vs Alexandrite 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 Jet is ConchoidalWalter Schumann, ConchoidalWalter Schumann and Gemstones of the world (2001) More from other references.

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Jet Vs Alexandrite Luster

A primary knowledge about Jet vs Alexandrite 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. Jet exhibits Waxy luster. Alexandrite, on other hand, exhibits Vitreous luster.