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Stolzite
Stolzite

Opal
Opal



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Stolzite
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Opal

Stolzite and Opal Optical Properties

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Optical Properties

Luster

Resinous, Subadamantine
Vitreous, Pearly

Pleochroism

-
None

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

2.180-2.1901.37-1.52
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
Trigonal

Birefringence

0.090-9999
0 0.296
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Clarity

-
Transparent

Stolzite and Opal Optic Character

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

Stolzite and Opal Transparency

Similar to their colors, Stolzite 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, Stolzite is while Stolzite is in appearance.