Ammolite and Catapleiite Optical Properties

Ammolite

Catapleiite

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1 Optical Properties

1.1 Luster

Silky, Vitreous

Vitreous

1.2 Pleochroism

None

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)

1.5 Refractive Index

1.520-1.6701.590-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Monoclinic Prismatic H-M Symbol (2/m) Space Group: B2/b (pseudo-HEX)

1.8 Birefringence

0.135-0.1450.039

0 0.296

1.9 Clarity

Not Available

TransparentUlrich Henn and Claudio C. Milisenda

Ammolite and Catapleiite Optic Character

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

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Ammolite and Catapleiite Transparency

Similar to their colors, Ammolite 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, Ammolite is Not Available while Ammolite is Not Available in appearance.