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Stichtite
Stichtite

Opal
Opal



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Stichtite
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Opal

Stichtite and Opal Optical Properties

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Optical Properties

Luster

Waxy, Resinous
Vitreous, Pearly

Pleochroism

Weak
None

Dispersion

0.020.01
0.005 1
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Transparency

Translucent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.516-1.5441.37-1.52
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Trigonal

Birefringence

0.026-9999
0 0.296
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Clarity

Translucent
Transparent

Stichtite and Opal Optic Character

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

Similar to their colors, Stichtite and Opal 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.