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Forsterite
Forsterite

Adularia
Adularia



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Forsterite
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Adularia

Forsterite and Adularia Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

colorless.
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent
TransparentArthur Thomas

Refractive Index

1.635-1.6711.518-1.536
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.033-0.0420.005-0.008
0 0.296
👆🏻

Clarity

Transparent
TransparentArthur Thomas

Forsterite and Adularia Optic Character

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

Similar to their colors, Forsterite and Adularia 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.