Brookite and Catapleiite Optical Properties

Brookite

Catapleiite

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1 Optical Properties

1.1 Luster

Adamantine

Vitreous

1.2 Pleochroism

Very weak

Not Available

1.3 Dispersion

NANA

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

2.583-2.7411.590-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

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

1.8 Birefringence

0.1170.039

0 0.296

1.9 Clarity

Gemmological Tables (2004) More from other references

TransparentUlrich Henn and Claudio C. Milisenda

Brookite and Catapleiite Optic Character

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

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