Anhydrite and Narsarsukite Optical Properties

Anhydrite

Narsarsukite

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1 Optical Properties

1.1 Luster

Pearly, Greasy

Vitreous, Pearly

1.2 Pleochroism

For violet varieties

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

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent

Transparent, Translucent

1.5 Refractive Index

1.570-1.6141.610-1.647

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

tetragonal

1.8 Birefringence

0.042-0.0440.021

0 0.296

1.9 Clarity

Transparent

Anhydrite and Narsarsukite Optic Character

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

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