Povondraite and Dumortierite Optical Properties

Povondraite

Dumortierite

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1 Optical Properties

1.1 Luster

Resinous

Vitreous

1.2 Pleochroism

Strong: yellow-brown

Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

Translucent

Translucent, Translucent to opaque

1.5 Refractive Index

Not Available1.669-1.723

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Orthorhombic

1.8 Birefringence

Not Available0.011-0.037

0 0.296

1.9 Clarity

Translucent

Povondraite and Dumortierite Optic Character

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

Similar to their colors, Povondraite and Dumortierite 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, Povondraite is Translucent while Povondraite is Translucent in appearance.