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Pumpellyite
Pumpellyite

Kyanite Cyprine
Kyanite Cyprine



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Pumpellyite
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Kyanite Cyprine

Pumpellyite and Kyanite Cyprine Optical Properties

1 Optical Properties
1.1 Luster
Fibrous
Vitreous
1.2 Pleochroism
Not Available
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Transparent
1.5 Refractive Index
1.674-1.7641.710-1.735
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.014-0.0160.012-0.033
Achroite
0 0.296
1.9 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
Transparent

Pumpellyite and Kyanite Cyprine Optic Character

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

Pumpellyite and Kyanite Cyprine Transparency

Similar to their colors, Pumpellyite 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, Pumpellyite is Gemmological Tables (2004) while Pumpellyite is Gemmological Tables (2004) in appearance.