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Biotite
Biotite

Peridot
Peridot



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Biotite
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Peridot

Biotite and Peridot Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Greasy
1.2 Pleochroism
Strong
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent
1.5 Refractive Index
1.565-1.6251.64-1.69
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
0.03-0.070.036
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Biotite and Peridot Optic Character

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

Biotite and Peridot Transparency

Similar to their colors, Biotite 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, Biotite is Not Available while Biotite is Not Available in appearance.