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Peridot
Peridot

Sanidine
Sanidine



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Peridot
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Sanidine

Peridot and Sanidine Optical Properties

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Optical Properties

Luster

Vitreous, Greasy
-

Pleochroism

Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
-

Dispersion

0.020.01
0.005 1
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Transparency

Transparent
Transparent

Refractive Index

1.64-1.691.518-1.536
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.0360.005-0.008
0 0.296
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Clarity

Transparent
Transparent

Peridot and Sanidine Optic Character

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

Peridot and Sanidine Transparency

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