Black Opal

Gahnospinel

Black Opal Vs Gahnospinel

Black Opal

Gahnospinel

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1 Astrology

1.1 Origin

Australia

Sri Lanka

1.2 Color

White, Colorless, Blue, Red, Green, Yellow, Violet

Blue

1.3 Streak

Not Available

1.4 For which Rashi?

Not Available

Sagittarius, Scorpio

1.5 Planet

Not Available

Pluto

1.6 Element of Planets

Not Available

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Not Available

Projective

1.9 Deities

Not Available

Hephaestus

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

Money

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

1.97-2.223.65-4.55

1 7.18

2.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

ConchoidalArthur Thomas, Gemstones (2009)

2.6 Cleavage

Not Available

None, but may exhibit slight parting

2.7 Mohs Hardness

6-6.57.5-8

2 10

2.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

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

3 Optical Properties

3.1 Luster

Not Available

Vitreous

3.2 Pleochroism

AbsentWalter Schumann

3.3 Dispersion

NoneNA

0.007 1

3.4 Transparency

Transparent, Translucent

Gemmological Tables (2004)

3.5 Refractive Index

1.370-1.4701.735-1.790

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Not Available

Isometric

3.8 Birefringence

Not AvailableNot Available

0 0.296

3.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

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

Black Opal Vs Gahnospinel Fracture

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

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Black Opal Vs Gahnospinel Luster

A primary knowledge about Black Opal vs Gahnospinel 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, on other hand, exhibits Vitreous luster.