Home
Gemstones


Stibiotantalite and Williamsite Optical Properties


Williamsite and Stibiotantalite Optical Properties


Optical Properties

Luster
Adamantine   
Waxy, Silky, Resinous, Greasy   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)   

Refractive Index
2.37-2.45   
1.530-1.575   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
0.08   
Not Available   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
TranslucentHerve Nicolas Lazzarelli   

Benefits >>
<< Physical Properties

Stibiotantalite and Williamsite Optic Character

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

Compare Red Gemstones

Stibiotantalite and Williamsite Transparency

Similar to their colors, Stibiotantalite and Williamsite 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.

Red Gemstones

Red Gemstones


Compare Red Gemstones