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Peridot
Peridot

Gedrite
Gedrite



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Peridot
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Gedrite

Peridot and Gedrite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Greasy
Fibrous, Vitreous
1.2 Pleochroism
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
Weak to moderate
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.13 Transparency
Transparent
Transparent
1.14 Refractive Index
1.64-1.691.625-1.718
Agate Opal
1 3.25
1.15 Optic Character
Not Available
Not Available
1.16 Crystal System
Orthorhombic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
1.17 Birefringence
0.036Not Available
Achroite
0 0.296
1.18 Clarity
Transparent
Transparent

Peridot and Gedrite Optic Character

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

Similar to their colors, Peridot and Gedrite 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.