Esperite and Kyanite Optical Properties

Esperite

Kyanite

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Pearly

1.2 Pleochroism

colorless.

Trichroic

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

OpaqueAnthony et al, Opaque, Transparent

Not Available

1.5 Refractive Index

1.760-1.7741.71-1.74

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Triclinic

1.8 Birefringence

0.012Not Available

0 0.296

1.9 Clarity

OpaqueAnthony et al

Color grading system

Esperite and Kyanite Optic Character

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

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Esperite and Kyanite Transparency

Similar to their colors, Esperite 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, Esperite is Opaque, OpaqueAnthony et al and Transparent while Esperite is Opaque, OpaqueAnthony et al and Transparent in appearance.