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Rutile
Rutile

Sellaite
Sellaite



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Rutile
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Sellaite

Rutile and Sellaite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Adamantine
Weak to distinct brownish red-green-yellow
0.33
Transparent, Translucent
2.609-2.903
-
tetragonal
0.296
Transparent
 
Vitreous
-
0.03
Transparent
1.378-1.390
-
tetragonal
0.012
Transparent

Rutile and Sellaite Optic Character

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

Rutile and Sellaite Transparency

Similar to their colors, Rutile 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, Rutile is Transparent and Translucent while Rutile is Transparent and Translucent in appearance.