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Orbicular jasper
Orbicular jasper

Mellite
Mellite



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Orbicular jasper
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Mellite

Orbicular jasper and Mellite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak: yellowish brown yellowAnthony et al

Dispersion

0.010.01
0.005 1
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Transparency

-
-

Refractive Index

-99991.509-1.541
1 3.25
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Optic Character

-
-

Crystal System

-
-

Birefringence

-99990.030
0 0.296
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Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Orbicular jasper and Mellite Optic Character

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

Orbicular jasper and Mellite Transparency

Similar to their colors, Orbicular jasper and Mellite 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, Orbicular jasper is while Orbicular jasper is in appearance.