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Biotite
Biotite

Chondrodite
Chondrodite



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Biotite
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Chondrodite

Biotite and Chondrodite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous, Greasy

Pleochroism

Strong
X golden yellow to orange

Dispersion

-0.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.565-1.6251.589-1.670
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.03-0.070.027-0.032
0 0.296
👆🏻

Clarity

-
Transparent

Biotite and Chondrodite Optic Character

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

Similar to their colors, Biotite and Chondrodite 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 while Biotite is in appearance.