Black Opal

Gedrite

Black Opal Vs Gedrite

Black Opal

Gedrite

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1 Astrology

1.1 Origin

Australia

Southern and central Africa

1.2 Color

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

Brown, Brown, Green, Green, gray, White

1.3 Streak

Not Available

gray, White, gray, White

1.4 For which Rashi?

Not Available

1.5 Planet

Not Available

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

1.9 Deities

Not Available

1.10 Not to wear with

Not Available

1.11 Powers

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

1.97-2.223.15-3.259

1 7.18

2.5 Fracture

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

Not Available

2.6 Cleavage

Not Available

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

2.7 Mohs Hardness

6-6.55.5-6

2 10

2.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

3 Optical Properties

3.1 Luster

Not Available

Fibrous, Vitreous

3.2 Pleochroism

AbsentWalter Schumann

Weak to moderate

3.3 Dispersion

NoneNA

0.007 1

3.4 Transparency

Transparent, Translucent

Transparent

3.5 Refractive Index

1.370-1.4701.625-1.718

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Not Available

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

3.8 Birefringence

Not AvailableNot Available

0 0.296

3.9 Clarity

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

Black Opal Vs Gedrite Fracture

Fracture is an important parameter when you compare Black Opal and Gedrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Black Opal Vs Gedrite 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).

Compare Blue Gemstones

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Black Opal Vs Gedrite Luster

A primary knowledge about Black Opal vs Gedrite 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. Gedrite, on other hand, exhibits Fibrous and Vitreous luster.