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Petoskey Stone
Petoskey Stone

Afghanite
Afghanite



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Petoskey Stone
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Afghanite

Petoskey Stone and Afghanite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.01
-
-9999
-
Trigonal
-9999
-
 
Vitreous
-
0.02
Transparent
1.523
-
Trigonal
0.006
Transparent

Petoskey Stone and Afghanite Optic Character

Petoskey Stone and Afghanite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Petoskey Stone Vs Afghanite 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 Petoskey Stone and Afghanite 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.

Petoskey Stone and Afghanite Transparency

Similar to their colors, Petoskey Stone and Afghanite 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, Petoskey Stone is while Petoskey Stone is in appearance.