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Rhodolite
Rhodolite

Bertrandite
Bertrandite



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Rhodolite
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Bertrandite

Rhodolite and Bertrandite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Vitreous

Pleochroism

None
none.

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
TransparentAnthony et al

Refractive Index

1.7601.583-1.614
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21

Birefringence

0.010-0.014-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TransparentAnthony et al

Rhodolite and Bertrandite Optic Character

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

Similar to their colors, Rhodolite and Bertrandite 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.