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Amblygonite
Amblygonite

Emerald
Emerald



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Amblygonite
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Emerald

Amblygonite and Emerald Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
weak to none
Strong dichroism: yellow green Lazzarelli
1.3 Dispersion
Albite Optical ..
0.01
Rank: 26 (Overall)
0.01
Rank: 26 (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.578-1.646
1.565-1.602
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Triclinic
Hexagonal
1.8 Birefringence
0.020-0.030
0.0040-0.0070
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Color grading system

Amblygonite and Emerald Optic Character

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

Amblygonite and Emerald Transparency

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

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