Dumortierite

Spinel

Dumortierite Vs Spinel

Dumortierite

Spinel

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1 Astrology

1.1 Origin

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

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

1.2 Color

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

Blue, Violet, Colorless, Red, Green, Brown

1.3 Streak

White

1.4 For which Rashi?

Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius

Sagittarius, Scorpio, Sagittarius, Scorpio, Sagittarius, Scorpio

1.5 Planet

Saturn

Pluto

1.6 Element of Planets

Water

Not Available

1.7 How to Wear?

1.7.1 Finger

Not Available

1.7.2 Ring Metal

Not Available

1.8 Energy

Receptive

Projective

1.9 Deities

Isis

Hephaestus

1.10 Not to wear with

Not Available

1.11 Powers

Healing

Money

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

none

2.3 Durability

Not Available

2.4 Specific Gravity

3.26-3.413.64-3.66

1 7.18

2.5 Fracture

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

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

2.6 Cleavage

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

None, but may exhibit slight parting

2.7 Mohs Hardness

7-8.58

2 10

2.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

MgAl₂O₄

3 Optical Properties

3.1 Luster

Vitreous

3.2 Pleochroism

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

Absent

3.3 Dispersion

None0.02

0.007 1

3.4 Transparency

Translucent, Translucent to opaque

Transparent, Translucent, Transparent to translucent

3.5 Refractive Index

1.669-1.7231.73

1 3.25

3.6 Optic Character

Not Available

3.7 Crystal System

Orthorhombic

Isometric

3.8 Birefringence

0.011-0.037Not Available

0 0.296

3.9 Clarity

Translucent

TransparentUlrich Henn and Claudio C. Milisenda

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 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 ConchoidalWalter Schumann, Fibrous and Gemstones of the world (2001) More from other references. Spinel fracture is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) 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.