Narsarsukite and Williamsite Optical Properties

Narsarsukite

Williamsite

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

Weak; O = colorless to yellow; E = colorless to honey-yellow

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)

1.5 Refractive Index

1.610-1.6471.530-1.575

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

Not Available

1.8 Birefringence

0.021Not Available

0 0.296

1.9 Clarity

Transparent

TranslucentHerve Nicolas Lazzarelli

Narsarsukite and Williamsite Optic Character

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

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