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Coral and Amblygonite Optical Properties


Amblygonite and Coral Optical Properties


Optical Properties

Luster
Not Available   
Vitreous, Pearly   

Pleochroism
AbsentWalter Schumann   
weak to none   

Dispersion
None   
0.01   
26

Transparency
Translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.486-1.658   
1.578-1.646   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Trigonal   
Triclinic   

Birefringence
0.160-0.172   
0.020-0.030   

Clarity
Translucent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Coral and Amblygonite Optic Character

Coral and Amblygonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Coral and Amblygonite 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 Coral and Amblygonite 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. Amblygonite has Biaxial/+ character.

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Coral and Amblygonite Transparency

Similar to their colors, Coral and Amblygonite 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, Coral is Translucent while Coral is Translucent in appearance.

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