Common Opal

Cassiterite

Common Opal Vs Cassiterite

Common Opal

Cassiterite

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1 Astrology

1.1 Origin

Southern and central Africa

Sri Lanka

1.2 Color

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

Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Brown, Brownish, Black, Colorless, Green, gray

1.3 Streak

Not Available

White, Brownish, Brownish, 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

Brittle

2.2 Solubility

Not Available

insoluble

2.3 Durability

Not Available

2.4 Specific Gravity

1.98-2.506.86-7.03

1 7.18

2.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001)

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular

2.6 Cleavage

Not Available

{100} imperfect, {110} indistinct; partings on {111} or {011}

2.7 Mohs Hardness

5.5-6.56-7

2 10

2.8 Chemical Composition

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

3 Optical Properties

3.1 Luster

Not Available

Adamantine, Greasy

3.2 Pleochroism

AbsentWalter Schumann

Pleochroic haloes have been observed. Dichroic in yellow

3.3 Dispersion

None0.07

0.007 1

3.4 Transparency

Translucent

Transparent, Translucent

3.5 Refractive Index

1.37-1.521.990-2.105

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Not Available

tetragonal

3.8 Birefringence

Not Available0.096-0.098

0 0.296

3.9 Clarity

Translucent

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

Common Opal Vs Cassiterite Fracture

Fracture is an important parameter when you compare Common Opal and Cassiterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Common Opal Vs Cassiterite 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 Common Opal is Conchoidal, Conchoidal and Gemstones of the world (2001). Cassiterite fracture is ConchoidalArthur Thomas, Gemstones (2009), Irregular, Subconchoidal and Uneven.

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Common Opal Vs Cassiterite Luster

A primary knowledge about Common Opal vs Cassiterite 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. Cassiterite, on other hand, exhibits Adamantine and Greasy luster.