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Almandine
Almandine

Chlorite group
Chlorite group



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Almandine
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Chlorite group

Almandine and Chlorite group Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Vitreous, Pearly

Pleochroism

None
-

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.770-1.8201.57-1.67
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
monoclinic

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Almandine and Chlorite group Optic Character

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

Almandine and Chlorite group Transparency

Similar to their colors, Almandine and Chlorite group 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, Almandine is while Almandine is in appearance.