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Peridot
Peridot

Prasiolite
Prasiolite



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Prasiolite

Peridot and Prasiolite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
Very weak: light green pale greenWalter Schumann
1.3 Dispersion
Albite Optical ..
0.02
Rank: 18 (Overall)
0.01
Rank: 27 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.64-1.69
1.544-1.553
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Trigonal
1.8 Birefringence
0.036
0.009
1.9 Clarity
Transparent
Transparent

Peridot and Prasiolite Optic Character

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

Similar to their colors, Peridot and Prasiolite 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.