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Dravite
Dravite

Meionite
Meionite



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Dravite
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Meionite

Dravite and Meionite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Resinous
1.2 Pleochroism
Very strong: pale yellow colorless
Not Available
1.3 Dispersion
Albite Optical ..
0.02
Rank: 22 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.614-1.666
1.556-1.600
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Not Available
1.8 Birefringence
0.014-0.032
0.024-0.037
1.9 Clarity
Transparent
Transparent

Dravite and Meionite Optic Character

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

Similar to their colors, Dravite and Meionite 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.