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Rhodolite
Rhodolite

Allanite
Allanite



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Rhodolite
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Allanite

Rhodolite and Allanite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
-

Pleochroism

None
-

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.7601
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
-

Birefringence

0.010-0.0140.013-0.036
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Rhodolite and Allanite Optic Character

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

Rhodolite and Allanite Transparency

Similar to their colors, Rhodolite and Allanite 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, Rhodolite is while Rhodolite is in appearance.