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Apophyllite and Pearl Optical Properties


Pearl and Apophyllite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Pearly   

Pleochroism
Dichroic (colorless)   
AbsentWalter Schumann   

Dispersion
Not Available   
None   

Transparency
Transparent, Translucent   
Translucent, Opaque   

Refractive Index
1.530-1.543   
1.52-1.66   

Optic Character
Uniaxial/-   
Not Available   

Crystal System
tetragonal   
Orthorhombic   

Birefringence
0.000-0.003   
0.156   

Clarity
Transparent   
Translucent   

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Apophyllite and Pearl Optic Character

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

Similar to their colors, Apophyllite and Pearl 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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