Optical Properties of Dravite

Dravite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Very strong: pale yellow colorless

1.3 Dispersion

0.02

Rank: 22 (Overall) ▶

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

1.614-1.666

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

1.8 Birefringence

0.014-0.032

0 0.296

1.9 Clarity

Transparent

Dravite Luster

Optical Properties of Dravite 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. Dravite optical properties like luster, clarity, refractive index etc. are used to determine the non-destructive methods during gemstone identification and evaluation.

Dravite luster is the quantity of light the crystal reflects when light is incident on it. Dravite which is commonly found in White, Colorless, Blue, Red, Green, Yellow, Violet, Black, Green, Red, Blue, White color, is Transparent in nature. It possess Vitreous luster.

Blue Gemstones

Gadolinium Gallium ...

Dravite Refractive Index

Optical properties of a Dravite 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 Dravite.

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 Dravite refractive index is 1.614-1.666. Birefringence value for this gem is 0.014-0.032. So if you are searching for prominent Blue Gemstones, Dravite gem is something not miss on, since it has been a favorite pick in the gem wearing community.

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