Rosasite and Dumortierite Optical Properties

Rosasite

Dumortierite

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1 Optical Properties

1.1 Luster

Silky, Vitreous

Vitreous

1.2 Pleochroism

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

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

Not Available

Translucent, Translucent to opaque

1.5 Refractive Index

1.672-1.6881.669-1.723

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Orthorhombic

1.8 Birefringence

0.139-0.1430.011-0.037

0 0.296

1.9 Clarity

Not Available

Translucent

Rosasite and Dumortierite Optic Character

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

Similar to their colors, Rosasite 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, Rosasite is Not Available while Rosasite is Not Available in appearance.