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Dravite
Dravite

Chrysoprase
Chrysoprase



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Dravite
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Chrysoprase

Dravite and Chrysoprase Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Vitreous, Waxy
1.2 Pleochroism
Very strong: pale yellow colorless
AbsentWalter Schumann
1.3 Dispersion
0.02None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Translucent, Translucent, Opaque, Translucent to nearly opaque
1.5 Refractive Index
1.614-1.6661.530-1.543
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
Trigonal
1.8 Birefringence
0.014-0.0320.004
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Dravite and Chrysoprase Optic Character

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

Similar to their colors, Dravite and Chrysoprase 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.