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Shungite
Shungite

Dumortierite
Dumortierite



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Shungite
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Dumortierite

Shungite and Dumortierite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Translucent, Translucent to opaque
1.5 Refractive Index
Not Available1.669-1.723
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
Not Available0.011-0.037
Achroite
0 0.296
1.9 Clarity
Not Available
Translucent

Shungite and Dumortierite Optic Character

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

Shungite and Dumortierite Transparency

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