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Afghanite
Afghanite

Peridot
Peridot



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Afghanite
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Peridot

Afghanite and Peridot Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Greasy

Pleochroism

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

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.5231.64-1.69
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.0060.036
0 0.296
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Clarity

Transparent
Transparent

Afghanite and Peridot Optic Character

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

Afghanite and Peridot Transparency

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