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Taaffeite
Taaffeite

Catapleiite
Catapleiite



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Taaffeite
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Catapleiite

Taaffeite and Catapleiite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Weak
Not Available
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
1.5 Refractive Index
1.70-1.731.590-1.629
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: B2/b (pseudo-HEX)
1.8 Birefringence
0.0550.039
Achroite
0 0.296
1.9 Clarity
Color grading system
TransparentUlrich Henn and Claudio C. Milisenda

Taaffeite and Catapleiite Optic Character

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

Taaffeite and Catapleiite Transparency

Similar to their colors, Taaffeite and Catapleiite 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, Taaffeite is Gemmological Tables (2004) More from other references while Taaffeite is Gemmological Tables (2004) More from other references in appearance.