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Sard
Sard

Petoskey Stone
Petoskey Stone



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Sard
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Petoskey Stone

Sard and Petoskey Stone Optical Properties

1 Optical Properties
1.1 Luster
Waxy
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Not Available
1.5 Refractive Index
1.535-1.539Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal
1.8 Birefringence
0.008-0.010Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Not Available

Sard and Petoskey Stone Optic Character

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

Sard and Petoskey Stone Transparency

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