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Alabaster
Alabaster

Dravite
Dravite



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Alabaster
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Dravite

Alabaster 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
None0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
1.520-1.5301.614-1.666
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
0.0100.014-0.032
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Alabaster and Dravite Optic Character

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

Alabaster and Dravite Transparency

Similar to their colors, Alabaster 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, Alabaster is Translucent while Alabaster is Translucent in appearance.