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Rhodolite
Rhodolite

Dravite
Dravite



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Rhodolite
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Dravite

Rhodolite and Dravite Optical Properties

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1 Optical Properties
1.1 Luster
Greasy, Vitreous
Vitreous
1.2 Pleochroism
None
Very strong: pale yellow colorless
1.3 Dispersion
None0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Transparent
1.5 Refractive Index
1.7601.614-1.666
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
1.8 Birefringence
0.010-0.0140.014-0.032
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Rhodolite and Dravite Optic Character

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

Rhodolite and Dravite Transparency

Similar to their colors, Rhodolite 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, Rhodolite is Gemmological Tables (2004) while Rhodolite is Gemmological Tables (2004) in appearance.