Feldspar and Tourmaline Bi Color Optical Properties

Feldspar

Tourmaline Bi Color

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

None

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

Not Available

1.5 Refractive Index

1.518-1.5701.61-1.66

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic or monoclinic

Not Available

1.8 Birefringence

0.008-0.010Not Available

0 0.296

1.9 Clarity

Transparent

Not Available

Feldspar and Tourmaline Bi Color Optic Character

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

Feldspar Vs Garnet

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Feldspar and Tourmaline Bi Color Transparency

Similar to their colors, Feldspar 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, Feldspar is Translucent and Transparent while Feldspar is Translucent and Transparent in appearance.