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Stibiotantalite
Stibiotantalite

Ruby
Ruby



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Stibiotantalite
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Ruby

Stibiotantalite and Ruby Optical Properties

Optical Properties

Luster

Adamantine
Vitreous, Adamantine

Pleochroism

-
Strong: purplish-red

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to opaque

Refractive Index

2.37-2.451.762-1.778
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.080.008
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Stibiotantalite and Ruby Optic Character

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

Stibiotantalite and Ruby Transparency

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