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Dumortierite
Dumortierite

Nepheline
Nepheline



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X
Dumortierite
X
Nepheline

Dumortierite Vs Nepheline

Astrology

Origin

Southern and central Africa
Canada

Color

Blue, Violet, Brown, White, Greenish, pink
White, Reddish, gray, Brown, Brownish

Streak

White
White

For which Rashi?

Leo, Sagittarius
-

Planet

Saturn
-

Element of Planets

Water
-

Energy

-
-

How to Wear?

Finger

-
-

Ring Metal

-
-

Deities

Isis
-

Not to wear with

-
-

Powers

Healing
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.26-3.412.55-2.65
1 7.18
👆🏻

Fracture

Fibrous, ConchoidalWalter Schumann
Subconchoidal, Conchoidal

Cleavage

Distinct on {100}, poor on {110}; parting on {001}
[1010] Poor

Mohs Hardness

7-8.55-6
2 10
👆🏻

Chemical Composition

AlAl6O3BSi3O18
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Optical Properties

Luster

Vitreous
Vitreous, Greasy

Pleochroism

Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Translucent, Translucent to opaque
Transparent, Translucent

Refractive Index

1.669-1.7231.529-1.547
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Hexagonal

Birefringence

0.011-0.0370.003-0.004
0 0.296
👆🏻

Clarity

Translucent
Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus
-

Cardiovascular

-
-

Respiratory

Good
-

Reproductive

-
-

Digestive

-
-

Psychology

Patience
-

Healing

Emotional healing
-

Qualities Associated

Patience
Clarity

Dumortierite Vs Nepheline Fracture

Fracture is an important parameter when you compare Dumortierite and Nepheline Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Nepheline 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 Dumortierite is Fibrous and ConchoidalWalter Schumann. Nepheline fracture is Subconchoidal and Conchoidal.

Dumortierite Vs Nepheline Luster

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