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Agate and Williamsite Optical Properties


Williamsite and Agate Optical Properties


Optical Properties

Luster
Vitreous   
Waxy, Silky, Resinous, Greasy   

Pleochroism
Absent   
Not Available   

Dispersion
None   
Not Available   

Transparency
Translucent   
TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)   

Refractive Index
1.530-1.543   
1.530-1.575   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Not Available   

Birefringence
0.004   
Not Available   

Clarity
Translucent   
TranslucentHerve Nicolas Lazzarelli   

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Agate and Williamsite Optic Character

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

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Agate and Williamsite Transparency

Similar to their colors, Agate 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, Agate is Translucent while Agate is Translucent in appearance.

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