Clinohedrite and Dravite Optical Properties

Clinohedrite

Dravite

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1 Optical Properties

1.1 Luster

Pearly

Vitreous

1.2 Pleochroism

Not Available

Very strong: pale yellow colorless

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

11.614-1.666

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Domatic H-M Symbol (m) Space Group: Aa

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

1.8 Birefringence

Not Available0.014-0.032

0 0.296

1.9 Clarity

Transparent

Clinohedrite and Dravite Optic Character

Clinohedrite and Dravite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Clinohedrite and Dravite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Clinohedrite and Dravite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Clinohedrite and Dravite Transparency

Similar to their colors, Clinohedrite and Dravite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Clinohedrite is Transparent while Clinohedrite is Transparent in appearance.