Narsarsukite and Erythrite Optical Properties

Narsarsukite

Erythrite

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Subadamantine, Pearly

1.2 Pleochroism

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

Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

Not Available

1.5 Refractive Index

1.610-1.6471.626-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

monoclinic

1.8 Birefringence

0.021Not Available

0 0.296

1.9 Clarity

Transparent

Not Available

Narsarsukite and Erythrite Optic Character

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

Similar to their colors, Narsarsukite and Erythrite 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.