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Dravite
Dravite

Aegirine
Aegirine



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Dravite
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Aegirine

Dravite and Aegirine Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Resinous
1.2 Pleochroism
Very strong: pale yellow colorless
X = emerald green
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.614-1.6661.720-1.778
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
monoclinic
1.8 Birefringence
0.014-0.0320.037-0.061
Achroite
0 0.296
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Dravite and Aegirine Optic Character

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

Similar to their colors, Dravite and Aegirine 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.