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Elbaite
Elbaite

Thulite
Thulite



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Elbaite
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Thulite

Elbaite and Thulite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Pale green
Present
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
2.8 Transparency
Transparent
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.
2.9 Refractive Index
1.614-1.6661.695
Agate Opal
1 3.25
2.10 Optic Character
Not Available
Not Available
3.2 Crystal System
Trigonal
Orthorhombic
3.4 Birefringence
0.014-0.0320.006-0.018
Achroite
0 0.296
3.6 Clarity
Transparent
OpaqueHerve Nicolas Lazzarelli

Elbaite and Thulite Optic Character

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

Elbaite and Thulite Transparency

Similar to their colors, Elbaite 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, Elbaite is Transparent while Elbaite is Transparent in appearance.