Dumortierite

Opal

Dumortierite Vs Opal

Dumortierite

Opal

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Astrology

Origin

Southern and central Africa

Ethiopia

Color

Blue, Violet, Brown, White, Greenish, pink

Yellow, White, Red, Brown, Blue

Streak

White

For which Rashi?

Leo, Sagittarius

Cancer, Libra, Scorpio

Planet

Saturn

Mercury

Element of Planets

Water

Earth, Air, Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Isis

Cupid

Not to wear with

Powers

Healing

Astral Projection, Psychicism

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

BrittleWalter Schumann

Solubility

hot salt water

Durability

Specific Gravity

3.26-3.411.98-2.25

1 7.18

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Fracture

Fibrous, ConchoidalWalter Schumann

Conchoidal

Cleavage

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

None

Mohs Hardness

7-8.55-6.5

2 10

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Chemical Composition

AlAl₆O₃BSi₃O₁₈

SiO₂ · nH₂O

Optical Properties

Luster

Vitreous

Vitreous, Pearly

Pleochroism

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

None

Dispersion

0.010.01

0.005 1

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Transparency

Translucent, Translucent to opaque

Transparent, Translucent, Transparent to translucent

Refractive Index

1.669-1.7231.37-1.52

1 3.25

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Optic Character

Crystal System

Orthorhombic

Trigonal

Birefringence

0.011-0.037-9999

0 0.296

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Clarity

Translucent

Transparent

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Patience

Creativity

Healing

Emotional healing

Qualities Associated

Patience

Creativity

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 Fibrous and ConchoidalWalter Schumann. Opal fracture is Conchoidal.

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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 Vitreous and Pearly luster.