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Forsterite
Forsterite

Tremolite
Tremolite



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Forsterite
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Tremolite

Forsterite and Tremolite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Silky

Pleochroism

colorless.
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.635-1.6711.599-1.637
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.033-0.0420.023-0.028
0 0.296
👆🏻

Clarity

Transparent
Transparent

Forsterite and Tremolite Optic Character

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

Similar to their colors, Forsterite and Tremolite 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.