Spinel and Triplite Optical Properties

Spinel

Triplite

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Optical Properties

Luster

Vitreous

Pleochroism

Absent

DistinctArthur Thomas

Dispersion

0.020.04

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Translucent

Refractive Index

1.731.643-1.703

1 3.25

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Optic Character

Crystal System

Isometric

Birefringence

-99990.020

0 0.296

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Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Translucent

Spinel and Triplite Optic Character

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

Similar to their colors, Spinel and Triplite 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, Spinel is Transparent, Translucent and Transparent to translucent while Spinel is Transparent, Translucent and Transparent to translucent in appearance.