Sunstone and Williamsite Optical Properties

Sunstone

Williamsite

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

Vitreous

Weak or absentWalter Schumann

0.01

Transparent, Translucent, Transparent to translucent

1.53-1.55

Triclinic

0.007-0.010

Transparent to translucent

Waxy, Silky, Resinous, Greasy

0.03

TranslucentHerve Nicolas Lazzarelli

1.530-1.575

-9999

TranslucentHerve Nicolas Lazzarelli

Sunstone and Williamsite Optic Character

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

Similar to their colors, Sunstone and Williamsite 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 while Sunstone is in appearance.