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Petoskey Stone
Petoskey Stone

Sard
Sard



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Petoskey Stone
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Sard

Petoskey Stone and Sard Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Waxy
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Translucent
1.5 Refractive Index
Not Available1.535-1.539
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
Not Available0.008-0.010
Achroite
0 0.296
1.9 Clarity
Not Available
Translucent

Petoskey Stone and Sard Optic Character

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

Similar to their colors, Petoskey Stone and Sard 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 Not Available while Petoskey Stone is Not Available in appearance.