Proustite

Alexandrite

Proustite Vs Alexandrite

Proustite

Alexandrite

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1 Astrology

1.1 Origin

Southern and central Africa

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, Reddish, gray

Green

1.3 Streak

Black, Red

Not Available

1.4 For which Rashi?

Not Available

Scorpio

1.5 Planet

Not Available

Venus

1.6 Element of Planets

Not Available

Earth

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Not Available

Projective, Receptive

1.9 Deities

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

Love

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Brittle

Not Available

2.2 Solubility

Not Available

2.3 Durability

Not Available

2.4 Specific Gravity

5.51-5.643.69-3.81

1 7.18

2.5 Fracture

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Not Available

2.6 Cleavage

Distinct on {10 1 1}

1,1 ; 3,2.

2.7 Mohs Hardness

2.58.5

2 10

2.8 Chemical Composition

Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

BeAl ₂ O ₄

3 Optical Properties

3.1 Luster

Adamantine

Vitreous

3.2 Pleochroism

Moderate; cochineal-red to blood-red

Not Available

3.3 Dispersion

NANA

0.007 1

3.4 Transparency

OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references

Transparent, Transparent to nearly opaque

3.5 Refractive Index

2.792-3.0871.739-1.770

1 3.25

3.6 Optic Character

Not Available

Biaxial/+

3.7 Crystal System

Trigonal

Orthorhombic

3.8 Birefringence

0.295-0.2960.007-0.010

0 0.296

3.9 Clarity

OpaqueUlrich Henn and Claudio C. Milisenda

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

Proustite Vs Alexandrite Fracture

Fracture is an important parameter when you compare Proustite and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Proustite 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 Proustite is Brittle, ConchoidalArthur Thomas, Gemstones (2009), Uneven and Uneven.

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Proustite Vs Alexandrite Luster

A primary knowledge about Proustite 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. Proustite exhibits Adamantine luster. Alexandrite, on other hand, exhibits Vitreous luster.