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Kyanite Cyprine
Kyanite Cyprine

Grandidierite
Grandidierite



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Kyanite Cyprine
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Grandidierite

Kyanite Cyprine and Grandidierite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Pearly
1.2 Pleochroism
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
visible
1.3 Dispersion
Albite Optical ..
0.02
Rank: 18 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.710-1.735
1.578-1.639
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
0.012-0.033
0.037-0.039
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Kyanite Cyprine and Grandidierite Optic Character

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

Kyanite Cyprine and Grandidierite Transparency

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