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Dravite
Dravite

Chrysoberyl
Chrysoberyl



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Dravite
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Chrysoberyl

Dravite and Chrysoberyl Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Very strong: pale yellow colorless
X = red; Y = yellow-orange; Z = emerald-green
1.3 Dispersion
0.020.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.614-1.6661.746-1.763
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Orthorhombic
1.8 Birefringence
0.014-0.0320.007-0.013
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Dravite and Chrysoberyl Optic Character

Dravite and Chrysoberyl optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Dravite and Chrysoberyl 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 Chrysoberyl 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. Chrysoberyl has Biaxial/+ character.

Dravite and Chrysoberyl Transparency

Similar to their colors, Dravite and Chrysoberyl 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.