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Amblygonite
Amblygonite

Amethyst
Amethyst



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Amblygonite
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Amethyst

Amblygonite and Amethyst Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
weak to none
None
1.3 Dispersion
Albite Optical ..
0.01
Rank: 26 (Overall)
0.01
Rank: 27 (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Transparent to translucent
1.5 Refractive Index
1.578-1.646
1.544-1.553
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Triclinic
Trigonal
1.8 Birefringence
0.020-0.030
0.009
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Amblygonite and Amethyst Optic Character

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

Similar to their colors, Amblygonite and Amethyst 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.