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Beudantite
Beudantite

Sellaite
Sellaite



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Beudantite
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Sellaite

Beudantite and Sellaite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

visible
-

Dispersion

0.030.03
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.9571.378-1.390
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
tetragonal

Birefringence

0.0140.012
0 0.296
👆🏻

Clarity

-
Transparent

Beudantite and Sellaite Optic Character

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

Beudantite and Sellaite Transparency

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