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Dravite

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Dravite and Rhodolite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Greasy, Vitreous
1.2 Pleochroism
Very strong: pale yellow colorless
None
1.3 Dispersion
Albite Optical ..
0.02
Rank: 22 (Overall)
None
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Gemmological Tables (2004)
1.5 Refractive Index
1.614-1.666
1.760
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
cubic
1.8 Birefringence
0.014-0.032
0.010-0.014
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Dravite and Rhodolite Optic Character

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

Dravite and Rhodolite Transparency

Similar to their colors, Dravite and Rhodolite 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, Dravite is Transparent while Dravite is Transparent in appearance.