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Proustite and Tigers Eye Optical Properties


Tigers Eye and Proustite Optical Properties


Optical Properties

Luster
Adamantine   
Silky   

Pleochroism
Moderate; cochineal-red to blood-red   
Not Available   

Dispersion
Not Available   
None   

Transparency
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references   
Opaque   

Refractive Index
2.792-3.087   
1.534-1.540   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Trigonal   

Birefringence
0.295-0.296   
Not Available   

Clarity
OpaqueUlrich Henn and Claudio C. Milisenda   
Gemstones of the world (2001) More from other references   

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Proustite and Tigers Eye Optic Character

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

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Proustite and Tigers Eye Transparency

Similar to their colors, Proustite and Tigers Eye 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, Proustite is Gemmological Tables (2004) Rarely transparentMore from other references and OpaqueUlrich Henn and Claudio C. Milisenda while Proustite is Gemmological Tables (2004) Rarely transparentMore from other references and OpaqueUlrich Henn and Claudio C. Milisenda in appearance.

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