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Stibiotantalite and Spessartine Optical Properties


Spessartine and Stibiotantalite Optical Properties


Optical Properties

Luster
Adamantine   
Vitreous   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
0.03   
15

Transparency
Gemmological Tables (2004) More from other references   
Gemmological Tables (2004) More from other references   

Refractive Index
2.37-2.45   
1.789-1.820   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Isometric   

Birefringence
0.08   
0.027   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
TransparentUlrich Henn and Claudio C. Milisenda   

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Stibiotantalite and Spessartine Optic Character

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

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Stibiotantalite and Spessartine Transparency

Similar to their colors, Stibiotantalite and Spessartine 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 Gemmological Tables (2004) More from other references while Stibiotantalite is Gemmological Tables (2004) More from other references in appearance.

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Red Gemstones


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