Watermelon Tourmaline and Catapleiite Optical Properties

Watermelon Tourmaline

Catapleiite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Not Available

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

TransparentGemdat.org, Management Team (2012)

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

1.5 Refractive Index

1.614-1.6661.590-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

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

1.8 Birefringence

0.014-0.0400.039

0 0.296

1.9 Clarity

TransparentGemdat.org

TransparentUlrich Henn and Claudio C. Milisenda

Watermelon Tourmaline and Catapleiite Optic Character

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

Similar to their colors, Watermelon Tourmaline 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, Watermelon Tourmaline is Management Team (2012) and TransparentGemdat.org while Watermelon Tourmaline is Management Team (2012) and TransparentGemdat.org in appearance.