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Biotite
Biotite

Pyrope Almandine
Pyrope Almandine



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Biotite
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Pyrope Almandine

Biotite and Pyrope Almandine Optical Properties

Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

Strong
-

Dispersion

-0.02
0.005 1
👆🏻

Transparency

-
TransparentGemdat.org

Refractive Index

1.565-1.6251.73-1.77
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.03-0.07-9999
0 0.296
👆🏻

Clarity

-
TransparentGemdat.org

Biotite and Pyrope Almandine Optic Character

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

Similar to their colors, Biotite and Pyrope Almandine 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.