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Peridot
Peridot

Elbaite
Elbaite



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Peridot
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Elbaite

Peridot and Elbaite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Greasy
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
0.02
Transparent
1.64-1.69
-
Orthorhombic
0.036
Transparent
 
Vitreous
Pale green
0.02
Transparent
1.614-1.666
-
Trigonal
0.014-0.032
Transparent

Peridot and Elbaite Optic Character

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

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