Watermelon Tourmaline and Titanite Sphene Optical Properties

Watermelon Tourmaline

Titanite Sphene

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

Not Available

Green stones strong trichroism: typically colorless greenish yellow brownish to yellow;

1.3 Dispersion

0.020.05

0.007 1

1.4 Transparency

TransparentGemdat.org, Management Team (2012)

Transparent, Translucent

1.5 Refractive Index

1.614-1.6661.843-2.110

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

1.8 Birefringence

0.014-0.0400.100-0.192

0 0.296

1.9 Clarity

TransparentGemdat.org

Transparent

Watermelon Tourmaline and Titanite Sphene Optic Character

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

Similar to their colors, Watermelon Tourmaline and Titanite Sphene 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.