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Peridot
Peridot

Kyanite
Kyanite



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Peridot
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Kyanite

Peridot and Kyanite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Pearly
1.2 Pleochroism
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
Trichroic
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Not Available
1.5 Refractive Index
1.64-1.691.71-1.74
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Triclinic
1.8 Birefringence
0.036Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Color grading system

Peridot and Kyanite Optic Character

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

Peridot and Kyanite Transparency

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