Chrome Tourmaline and Montebrasite Optical Properties

Chrome Tourmaline

Montebrasite

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

TransparentWalter Schumann, Gemstones of the world (2001) More from other references

1.5 Refractive Index

1.614-1.6661.578-1.646

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Hexagonal

Not Available

1.8 Birefringence

0.014-0.0400.020-0.030

0 0.296

1.9 Clarity

Transparent

TransparentWalter Schumann

Chrome Tourmaline and Montebrasite Optic Character

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

Similar to their colors, Chrome Tourmaline and Montebrasite 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, Chrome Tourmaline is Translucent and Transparent while Chrome Tourmaline is Translucent and Transparent in appearance.