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Agate and Calcite Optical Properties


Calcite and Agate Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Pearly   

Pleochroism
Absent   
NilArthur Thomas   

Dispersion
None   
Not Available   

Transparency
Translucent   
Transparent, Translucent   

Refractive Index
1.530-1.543   
1.486-1.658   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Trigonal   

Birefringence
0.004   
0.154-0.174   

Clarity
Translucent   
Transparent   

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Agate and Calcite Optic Character

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

Similar to their colors, Agate and Calcite 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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