Sunstone and Rosasite Optical Properties

Sunstone

Rosasite

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1 Optical Properties

1.1 Luster

Vitreous

Silky, Vitreous

1.2 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

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Not Available

1.5 Refractive Index

1.53-1.551.672-1.688

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

monoclinic

1.8 Birefringence

0.007-0.0100.139-0.143

0 0.296

1.9 Clarity

Transparent to translucent

Not Available

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