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Paraiba
Paraiba

Dravite
Dravite



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Paraiba
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Dravite

Paraiba and Dravite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
Very strong: pale yellow colorless
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent
1.5 Refractive Index
1.618-1.6431.614-1.666
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
1.8 Birefringence
Not Available0.014-0.032
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Paraiba and Dravite Optic Character

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

Paraiba and Dravite Transparency

Similar to their colors, Paraiba 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, Paraiba is Not Available while Paraiba is Not Available in appearance.