Optical Properties of Dumortierite

Dumortierite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

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

1.3 Dispersion

None

Rank: N/A (Overall) ▶

0.007 1

1.4 Transparency

Translucent, Translucent to opaque

1.5 Refractive Index

1.669-1.723

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

1.8 Birefringence

0.011-0.037

0 0.296

1.9 Clarity

Translucent

Dumortierite Luster

Optical Properties of Dumortierite are its behavioral responses towards light. While few optical properties can be identified with naked eyes, other require special instruments by the gemologists to identify them. Dumortierite optical properties like luster, clarity, refractive index etc. are used to determine the non-destructive methods during gemstone identification and evaluation.

Dumortierite luster is the quantity of light the crystal reflects when light is incident on it. Dumortierite which is commonly found in Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink color, is Translucent and Translucent to opaque in nature. It possess Vitreous luster.

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Dumortierite Refractive Index

Optical properties of a Dumortierite crystal are responsive to the small changes in composition and strain within its crystalline structure. Absolute diligence is therefore necessary during cutting and polishing of the gemstone. All such optical properties are majorly influenced by Physical Properties of Dumortierite.

As we are well aware, refractive index is the phenomenon which is related to bending of light through a medium (crystal). It is used in qualitative analysis of gemstones by gemologists Besides, few gemstones exhibit property of dual refractive indices. This dual nature is known as Birefringence. The value of Dumortierite refractive index is 1.669-1.723. Birefringence value for this gem is 0.011-0.037. So if you are searching for prominent Gems for Leo, Dumortierite gem is something not miss on, since it has been a favorite pick in the gem wearing community.