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Stichtite
Stichtite

Sard
Sard



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Stichtite
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Sard

Stichtite and Sard Optical Properties

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Optical Properties

Luster

Waxy, Resinous
Waxy

Pleochroism

Weak
-

Dispersion

0.020.01
0.005 1
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Transparency

Translucent
Translucent

Refractive Index

1.516-1.5441.535-1.539
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.0260.008-0.010
0 0.296
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Clarity

Translucent
Translucent

Stichtite and Sard Optic Character

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

Stichtite and Sard Transparency

Similar to their colors, Stichtite and Sard 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, Stichtite is Translucent while Stichtite is Translucent in appearance.