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Almandine
Almandine

Garnet
Garnet



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Almandine
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Garnet

Almandine and Garnet Optical Properties

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Optical Properties

Luster

Greasy, Vitreous
Vitreous, Adamantine

Pleochroism

None
None

Dispersion

0.030.02
0.005 1
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Transparency

-
Transparent, Transparent to translucent

Refractive Index

1.770-1.8201.730-1.895
1 3.25
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Optic Character

-
-

Crystal System

cubic
Trigonal

Birefringence

-9999-9999
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Almandine and Garnet Optic Character

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

Similar to their colors, Almandine and Garnet 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.