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Sylvite
Sylvite

Stibiotantalite
Stibiotantalite



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Sylvite
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Stibiotantalite

Sylvite and Stibiotantalite Optical Properties

Optical Properties

Luster

Vitreous
Adamantine

Pleochroism

Visible in colored crystals
-

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.49032.37-2.45
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric
-

Birefringence

-99990.08
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Sylvite and Stibiotantalite Optic Character

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

Sylvite and Stibiotantalite Transparency

Similar to their colors, Sylvite and Stibiotantalite 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, Sylvite is while Sylvite is in appearance.