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Apophyllite and Achroite Optical Properties


Achroite and Apophyllite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Not Available   

Pleochroism
Dichroic (colorless)   
Not Available   

Dispersion
Not Available   
0.02   
22

Transparency
Transparent, Translucent   
Transparent, Translucent   

Refractive Index
1.530-1.543   
1.614-1.666   

Optic Character
Uniaxial/-   
Not Available   

Crystal System
tetragonal   
Not Available   

Birefringence
0.000-0.003   
0.014-0.040   

Clarity
Transparent   
Transparent   

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Apophyllite and Achroite Optic Character

Apophyllite and Achroite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Apophyllite and Achroite 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 Apophyllite and Achroite 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. Apophyllite has Uniaxial/- character.

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Apophyllite and Achroite Transparency

Similar to their colors, Apophyllite and Achroite 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, Apophyllite is Translucent and Transparent while Apophyllite is Translucent and Transparent in appearance.

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