Almandine Garnet and Forsterite Optical Properties

Almandine Garnet

Forsterite

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Optical Properties

Luster

Vitreous

Pleochroism

colorless.

Dispersion

0.020.02

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Transparent

Refractive Index

1.780-1.8101.635-1.671

1 3.25

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Optic Character

Crystal System

Isometric

Orthorhombic

Birefringence

-99990.033-0.042

0 0.296

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Clarity

Transparent to translucent

Transparent

Almandine Garnet and Forsterite Optic Character

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

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Almandine Garnet and Forsterite Transparency

Similar to their colors, Almandine Garnet and Forsterite 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 Garnet is Transparent, Translucent and Transparent to translucent while Almandine Garnet is Transparent, Translucent and Transparent to translucent in appearance.