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Herderite and Rhodolite Optical Properties


Rhodolite and Herderite Optical Properties


Optical Properties

Luster
Vitreous   
Greasy, Vitreous   

Pleochroism
Not Available   
None   

Dispersion
Not Available   
None   

Transparency
Transparent   
Gemmological Tables (2004)   

Refractive Index
1.587-1.642   
1.760   

Optic Character
Biaxial/+   
Not Available   

Crystal System
monoclinic   
cubic   

Birefringence
0.028-0.032   
0.010-0.014   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Herderite and Rhodolite Optic Character

Herderite and Rhodolite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Herderite and Rhodolite 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 Herderite and Rhodolite 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. Herderite has Biaxial/+ character.

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Herderite and Rhodolite Transparency

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

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