Sunstone and Rosasite Optical Properties

Sunstone

Rosasite

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Optical Properties

Luster

Vitreous

Silky, Vitreous

Pleochroism

Weak or absentWalter Schumann

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

Dispersion

0.010.03

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Refractive Index

1.53-1.551.672-1.688

1 3.25

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Optic Character

Crystal System

Triclinic

monoclinic

Birefringence

0.007-0.0100.139-0.143

0 0.296

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Clarity

Transparent to translucent

Sunstone and Rosasite Optic Character

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

Similar to their colors, Sunstone 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, Sunstone is Transparent, Translucent and Transparent to translucent while Sunstone is Transparent, Translucent and Transparent to translucent in appearance.