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Dumortierite
Dumortierite

Chrysocolla
Chrysocolla



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Dumortierite
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Chrysocolla

Dumortierite and Chrysocolla Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Greasy
1.2 Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
AbsentWalter Schumann
1.3 Dispersion
Albite Optical ..
None
Rank: N/A (Overall)
None
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent, Translucent to opaque
Opaque
1.5 Refractive Index
1.669-1.723
1.460-1.570
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
monoclinic
1.8 Birefringence
0.011-0.037
0.023-0.050
1.9 Clarity
Translucent
Gemmological Tables (2004) More from other references

Dumortierite and Chrysocolla Optic Character

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

Dumortierite and Chrysocolla Transparency

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