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Peridot

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Peridot and Cassiterite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Adamantine, Greasy
1.2 Pleochroism
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
Pleochroic haloes have been observed. Dichroic in yellow
1.3 Dispersion
Albite Optical ..
0.02
Rank: 18 (Overall)
0.07
Rank: 6 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.64-1.69
1.990-2.105
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
tetragonal
1.8 Birefringence
0.036
0.096-0.098
1.9 Clarity
Transparent
Transparent

Peridot and Cassiterite Optic Character

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

Similar to their colors, Peridot and Cassiterite 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.