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Zircon and Amblygonite Optical Properties


Amblygonite and Zircon Optical Properties


Optical Properties

Luster
Adamantine   
Vitreous, Pearly   

Pleochroism
Weak   
weak to none   

Dispersion
0.04   
11
0.01   
26

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.810-2.024   
1.578-1.646   

Optic Character
Not Available   
Biaxial/+   

Crystal System
tetragonal   
Triclinic   

Birefringence
0.047-0.055   
0.020-0.030   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Zircon and Amblygonite Optic Character

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

Similar to their colors, Zircon 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, Zircon is Transparent while Zircon is Transparent in appearance.

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