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Rhodolite
Rhodolite

Thulite
Thulite



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Rhodolite
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Thulite

Rhodolite and Thulite Optical Properties

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1 Optical Properties
1.1 Luster
Greasy, Vitreous
Vitreous
1.2 Pleochroism
None
Present
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.
1.5 Refractive Index
1.7601.695
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
Orthorhombic
1.8 Birefringence
0.010-0.0140.006-0.018
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
OpaqueHerve Nicolas Lazzarelli

Rhodolite and Thulite Optic Character

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

Similar to their colors, Rhodolite and Thulite 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 Gemmological Tables (2004) while Rhodolite is Gemmological Tables (2004) in appearance.