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Peridot
Peridot

Chalcedony
Chalcedony



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Peridot
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Chalcedony

Peridot and Chalcedony Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
AbsentWalter Schumann
1.3 Dispersion
0.02None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Translucent, Translucent to opaque
1.5 Refractive Index
1.64-1.691.530-1.543
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Trigonal
1.8 Birefringence
0.0360.003-0.009
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Peridot and Chalcedony Optic Character

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

Peridot and Chalcedony Transparency

Similar to their colors, Peridot and Chalcedony 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, Peridot is Transparent while Peridot is Transparent in appearance.