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Prasiolite
Prasiolite

Kyanite Cyprine
Kyanite Cyprine



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Prasiolite
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Kyanite Cyprine

Prasiolite and Kyanite Cyprine Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Very weak: light green pale greenWalter Schumann
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
1.3 Dispersion
0.010.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Transparent
1.5 Refractive Index
1.544-1.5531.710-1.735
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.0090.012-0.033
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Prasiolite and Kyanite Cyprine Optic Character

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

Prasiolite and Kyanite Cyprine Transparency

Similar to their colors, Prasiolite and Kyanite Cyprine 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, Prasiolite is Translucent and Transparent while Prasiolite is Translucent and Transparent in appearance.