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Smithsonite
Smithsonite

Dumortierite
Dumortierite



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Smithsonite and Dumortierite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
1.3 Dispersion
Albite Optical ..
0.01
Rank: 26 (Overall)
None
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
Translucent, Translucent to opaque
1.5 Refractive Index
1.620-1.850
1.669-1.723
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.223-0.227
0.011-0.037
1.9 Clarity
Translucent
Translucent

Smithsonite and Dumortierite Optic Character

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

Smithsonite and Dumortierite Transparency

Similar to their colors, Smithsonite 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, Smithsonite is Translucent while Smithsonite is Translucent in appearance.