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Forsterite
Forsterite

Poldervaartite
Poldervaartite



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Forsterite
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Poldervaartite

Forsterite and Poldervaartite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

colorless.
Weak: colorless light gray bluish grayAnthony et al

Dispersion

0.020.03
0.005 1
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Transparency

Transparent
Transparent

Refractive Index

1.635-1.6711.634-1.656
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.033-0.042-9999
0 0.296
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Clarity

Transparent
Transparent

Forsterite and Poldervaartite Optic Character

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

Forsterite and Poldervaartite Transparency

Similar to their colors, Forsterite and Poldervaartite 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, Forsterite is Transparent while Forsterite is Transparent in appearance.