Kyanite and Rosasite Optical Properties

Kyanite

Rosasite

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Silky, Vitreous

1.2 Pleochroism

Trichroic

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

1.5 Refractive Index

1.71-1.741.672-1.688

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

monoclinic

1.8 Birefringence

Not Available0.139-0.143

0 0.296

1.9 Clarity

Color grading system

Not Available

Kyanite and Rosasite Optic Character

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

Similar to their colors, Kyanite and Rosasite 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 is Not Available while Kyanite is Not Available in appearance.