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Milarite
Milarite

Sellaite
Sellaite



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Milarite
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Sellaite

Milarite and Sellaite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
-

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.529-1.5601.378-1.390
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
tetragonal

Birefringence

0.000-0.0110.012
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Milarite and Sellaite Optic Character

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

Milarite and Sellaite Transparency

Similar to their colors, Milarite and Sellaite 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, Milarite is while Milarite is in appearance.