Dumortierite

Opal

Dumortierite Vs Opal

Dumortierite

Opal

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1 Astrology

1.1 Origin

Southern and central Africa, violet, blue, violet, blue

Ethiopia

1.2 Color

Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink

Yellow, White, Red, Brown, Blue

1.3 Streak

White

1.4 For which Rashi?

Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius

Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio

1.5 Planet

Saturn

Mercury

1.6 Element of Planets

Water

Earth, Air, Water

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Receptive

Projective, Receptive

1.9 Deities

Isis

Cupid

1.10 Not to wear with

Not Available

1.11 Powers

Healing

Astral Projection, Psychicism

1.12 Birthstone

1.12.1 Planetary

Not Available

1.12.2 Talisman

Not Available

2 Physical Properties

2.1 Tenacity

Not Available

BrittleWalter Schumann

2.2 Solubility

Not Available

hot salt water

2.3 Durability

Not Available

2.4 Specific Gravity

3.26-3.411.98-2.25

1 7.18

2.5 Fracture

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle

2.6 Cleavage

Distinct on {100}, poor on {110}; parting on {001}

None

2.7 Mohs Hardness

7-8.55-6.5

2 10

2.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

SiO₂ · nH₂O

3 Optical Properties

3.1 Luster

Vitreous

Vitreous, Pearly

3.2 Pleochroism

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

None

3.3 Dispersion

NoneNone

0.007 1

3.4 Transparency

Translucent, Translucent to opaque

Transparent, Translucent, Transparent to translucent

3.5 Refractive Index

1.669-1.7231.37-1.52

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Orthorhombic

Trigonal

3.8 Birefringence

0.011-0.037Not Available

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

Dumortierite Vs Opal Fracture

Fracture is an important parameter when you compare Dumortierite and Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Opal 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 ConchoidalWalter Schumann, Fibrous and Gemstones of the world (2001) More from other references. Opal fracture is Brittle, Conchoidal, Conchoidal and Gemstones of the world (2001) More from other references.

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Dumortierite Vs Opal Luster

A primary knowledge about Dumortierite vs Opal 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. Opal, on other hand, exhibits Pearly and Vitreous luster.