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Rock Crystal and Sinhalite Optical Properties


Sinhalite and Rock Crystal Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
AbsentWalter Schumann   
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli   

Dispersion
0.01   
27
0.02   
21

Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references   
Gemmological Tables (2004) More from other references   

Refractive Index
1.544-1.553   
1.665-1.712   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
0.009   
0.036-0.042   

Clarity
TransparentWalter Schumann   
TransparentUlrich Henn and Claudio C. Milisenda   

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Rock Crystal and Sinhalite Optic Character

Rock Crystal and Sinhalite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Rock Crystal and Sinhalite 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 Rock Crystal and Sinhalite 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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Rock Crystal and Sinhalite Transparency

Similar to their colors, Rock Crystal and Sinhalite 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, Rock Crystal is Gemstones of the world (2001) More from other references and TransparentWalter Schumann while Rock Crystal is Gemstones of the world (2001) More from other references and TransparentWalter Schumann in appearance.

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