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Petoskey Stone
Petoskey Stone

Glaucophane
Glaucophane



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Petoskey Stone
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Glaucophane

Petoskey Stone and Glaucophane Optical Properties

Optical Properties

Luster

-
Vitreous, Pearly

Pleochroism

-
Strong

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

-99991.606-1.637
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
monoclinic

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
-

Petoskey Stone and Glaucophane Optic Character

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

Similar to their colors, Petoskey Stone and Glaucophane 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.