Gahnospinel

Alexandrite

Gahnospinel Vs Alexandrite

Gahnospinel

Alexandrite

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1 Astrology

1.1 Origin

Sri Lanka

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

Blue

Green

1.3 Streak

Not Available

1.4 For which Rashi?

Sagittarius, Scorpio

Scorpio

1.5 Planet

Pluto

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

Projective

Projective, Receptive

1.9 Deities

Hephaestus

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

Money

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

3.65-4.55

3.69-3.81

2.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

Not Available

2.6 Cleavage

None, but may exhibit slight parting

1,1 ; 3,2.

2.7 Mohs Hardness

7.5-8

8.5

2.8 Chemical Composition

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

BeAl ₂ O ₄

3 Optical Properties

3.1 Luster

Vitreous

3.2 Pleochroism

AbsentWalter Schumann

Not Available

3.3 Dispersion

Albite

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▶

▼

Not Available

Rank: N/A (Overall)▶

Not Available

Rank: N/A (Overall)▶

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Fluorite

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▶

0.044 (Anglesite)

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3.4 Transparency

Gemmological Tables (2004)

Transparent, Transparent to nearly opaque

3.5 Refractive Index

1.735-1.790

1.739-1.770

3.6 Optic Character

Not Available

Biaxial/+

3.7 Crystal System

Isometric

Orthorhombic

3.8 Birefringence

Not Available

0.007-0.010

3.9 Clarity

TransparentUlrich 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

Gahnospinel Vs Alexandrite Fracture

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

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Gahnospinel Vs Alexandrite Luster

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