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Corundum
Corundum

Peridot
Peridot



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Corundum
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Peridot

Corundum and Peridot Optical Properties

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1 Optical Properties
1.1 Luster
Adamantine, Vitreous
Vitreous, Greasy
1.2 Pleochroism
None
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
1.3 Dispersion
0.020.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Transparent
1.5 Refractive Index
1.758-1.7801.64-1.69
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.007-0.0100.036
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Transparent

Corundum and Peridot Optic Character

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

Corundum and Peridot Transparency

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