Danburite and Catapleiite Optical Properties

Danburite

Catapleiite

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1 Optical Properties

1.1 Luster

Vitreous, Greasy

Vitreous

1.2 Pleochroism

Weak: pale yellow yellow

Not Available

1.3 Dispersion

0.02NA

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

1.627-1.6391.590-1.629

1 3.25

1.6 Optic Character

Biaxial/+

Not Available

1.7 Crystal System

Orthorhombic

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

1.8 Birefringence

0.0060.039

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Danburite and Catapleiite Optic Character

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

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Danburite and Catapleiite Transparency

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