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Chrysocolla
Chrysocolla

Holmquistite
Holmquistite



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Holmquistite

Chrysocolla and Holmquistite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
Strong in shades of violet when dark-colored.Anthony et al
1.3 Dispersion
Albite Optical ..
None
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Opaque
Transparent
1.5 Refractive Index
1.460-1.570
1.622-1.666
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
1.8 Birefringence
0.023-0.050
Not Available
1.9 Clarity
Gemmological Tables (2004) More from other references
Transparent

Chrysocolla and Holmquistite Optic Character

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

Chrysocolla and Holmquistite Transparency

Similar to their colors, Chrysocolla and Holmquistite 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, Chrysocolla is Opaque while Chrysocolla is Opaque in appearance.