Corundum and Tourmaline Bi Color Optical Properties

Corundum

Tourmaline Bi Color

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1 Optical Properties

1.1 Luster

Adamantine, Vitreous

Not Available

1.2 Pleochroism

None

Not Available

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent

Not Available

1.5 Refractive Index

1.758-1.7801.61-1.66

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Not Available

1.8 Birefringence

0.007-0.010Not Available

0 0.296

1.9 Clarity

Gemmological Tables (2004) More from other references

Not Available

Corundum and Tourmaline Bi Color Optic Character

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

Similar to their colors, Corundum and Tourmaline Bi Color 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, Corundum is Translucent and Transparent while Corundum is Translucent and Transparent in appearance.