Sanidine and Erythrite Optical Properties

Sanidine

Erythrite

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1 Optical Properties

1.1 Luster

Not Available

Subadamantine, Pearly

1.2 Pleochroism

WeakMichael OâDonoghue

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

Not Available

1.5 Refractive Index

1.518-1.5361.626-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

0.005-0.008Not Available

0 0.296

1.9 Clarity

Transparent

Not Available

Sanidine and Erythrite Optic Character

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

Similar to their colors, Sanidine 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, Sanidine is Transparent while Sanidine is Transparent in appearance.