Dumortierite

Spinel

Dumortierite Vs Spinel

Dumortierite

Spinel

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Astrology

Origin

Southern and central Africa

Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia

Color

Blue, Violet, Brown, White, Greenish, pink

Blue, Violet, Colorless, Red, Green, Brown

Streak

White

For which Rashi?

Leo, Sagittarius

Sagittarius, Scorpio

Planet

Saturn

Pluto

Element of Planets

Water

Energy

How to Wear?

Finger

Ring Metal

Deities

Isis

Hephaestus

Not to wear with

Powers

Healing

Birthstone

Planetary

Talisman

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.26-3.413.64-3.66

1 7.18

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Fracture

Fibrous, ConchoidalWalter Schumann

Conchoidal, Uneven

Cleavage

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

None, but may exhibit slight parting

Mohs Hardness

7-8.58

2 10

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Chemical Composition

AlAl₆O₃BSi₃O₁₈

MgAl₂O₄

Optical Properties

Luster

Vitreous

Pleochroism

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

Absent

Dispersion

0.010.02

0.005 1

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Transparency

Translucent, Translucent to opaque

Transparent, Translucent, Transparent to translucent

Refractive Index

1.669-1.7231.73

1 3.25

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Optic Character

Crystal System

Orthorhombic

Isometric

Birefringence

0.011-0.037-9999

0 0.296

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Clarity

Translucent

TransparentUlrich Henn and Claudio C. Milisenda

Benefits

Physical

Neurological

Enhances mental clarity and focus

Cardiovascular

Respiratory

Good

Reproductive

Digestive

Psychology

Patience

Revitalization

Healing

Emotional healing

Qualities Associated

Patience

Vitality

Dumortierite Vs Spinel Fracture

Fracture is an important parameter when you compare Dumortierite and Spinel Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Spinel 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. Spinel fracture is Conchoidal and Uneven.

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Dumortierite Vs Spinel Luster

A primary knowledge about Dumortierite vs Spinel 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. Spinel, on other hand, exhibits Vitreous luster.