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Cavansite
Cavansite

Proustite
Proustite



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Cavansite
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Proustite

Cavansite and Proustite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Adamantine
1.2 Pleochroism
Visible: X=Z= colorless Y= blue
Moderate; cochineal-red to blood-red
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Not Available
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references
1.5 Refractive Index
1.542
2.792-3.087
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Trigonal
1.8 Birefringence
0.009
0.295-0.296
1.9 Clarity
Not Available
OpaqueUlrich Henn and Claudio C. Milisenda

Cavansite and Proustite Optic Character

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

Cavansite and Proustite Transparency

Similar to their colors, Cavansite and Proustite 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, Cavansite is Not Available while Cavansite is Not Available in appearance.