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Verdite
Verdite

Dravite
Dravite



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Dravite

Verdite and Dravite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Silky
Vitreous
1.2 Pleochroism
Extreme
Very strong: pale yellow colorless
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.02
Rank: 22 (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
1.580
1.614-1.666
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
1.8 Birefringence
Not Available
0.014-0.032
1.9 Clarity
Translucent
Transparent

Verdite and Dravite Optic Character

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

Verdite and Dravite Transparency

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