Nepheline

Tourmaline

Nepheline Vs Tourmaline

Nepheline

Tourmaline

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1 Astrology

1.1 Origin

Canada

Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan

1.2 Color

White, Reddish, gray, Brown, Brownish

Green, Blue, Yellow, Red, Brown, White, Colorless, Blue, Red, Green, Yellow, pink

1.3 Streak

White

1.4 For which Rashi?

Not Available

Libra

1.5 Planet

Not Available

Venus, Mars

1.6 Element of Planets

Not Available

Water

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

Venus

1.10 Not to wear with

Not Available

1.11 Powers

Not Available

Love, Courage

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

2.55-2.652.85-3.35

1 7.18

2.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

2.6 Cleavage

[1010] Poor

Indistinct

2.7 Mohs Hardness

5-67-7.5

2 10

2.8 Chemical Composition

Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

3 Optical Properties

3.1 Luster

Vitreous, Greasy

Vitreous

3.2 Pleochroism

Not Available

typically moderate to strong

3.3 Dispersion

NA0.02

0.007 1

3.4 Transparency

Transparent, Translucent

Transparent, Translucent, Transparent to opaque

3.5 Refractive Index

1.529-1.5471.614-1.666

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Hexagonal

Trigonal

3.8 Birefringence

0.003-0.0040.014-0.040

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

Nepheline Vs Tourmaline Fracture

Fracture is an important parameter when you compare Nepheline and Tourmaline Physical Properties. It is necessary to understand the significance of these properties, before you compare Nepheline Vs Tourmaline 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 Nepheline is Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal. Tourmaline fracture is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven.

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Nepheline Vs Tourmaline Luster

A primary knowledge about Nepheline vs Tourmaline 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. Nepheline exhibits Greasy and Vitreous luster. Tourmaline, on other hand, exhibits Vitreous luster.