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Apatite and Chrysoprase Optical Properties


Chrysoprase and Apatite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Vitreous, Waxy   

Pleochroism
Blue stones – strong   
AbsentWalter Schumann   

Dispersion
0.01   
27
None   

Transparency
Gemmological Tables (2004) More from other references   
Translucent, Translucent, Opaque, Translucent to nearly opaque   

Refractive Index
1.628-1.651   
1.530-1.543   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Trigonal   

Birefringence
0.002-0.008   
0.004   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Translucent   

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Apatite and Chrysoprase Optic Character

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

Similar to their colors, Apatite and Chrysoprase 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, Apatite is Gemmological Tables (2004) More from other references while Apatite is Gemmological Tables (2004) More from other references in appearance.

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