Serpentine and Dravite Optical Properties

Serpentine

Dravite

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1 Optical Properties

1.1 Luster

Vitreous, Greasy, Silky

Vitreous

1.2 Pleochroism

AbsentWalter Schumann

Very strong: pale yellow colorless

1.3 Dispersion

None0.02

0.007 1

1.4 Transparency

Translucent

Transparent

1.5 Refractive Index

1.560-1.5711.614-1.666

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

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

1.8 Birefringence

0.008-0.0140.014-0.032

0 0.296

1.9 Clarity

Translucent

Transparent

Serpentine and Dravite Optic Character

Serpentine and Dravite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Serpentine 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 Serpentine 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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Serpentine and Dravite Transparency

Similar to their colors, Serpentine 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, Serpentine is Translucent while Serpentine is Translucent in appearance.