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Amblygonite
Amblygonite

Lazulite
Lazulite



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Amblygonite
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Lazulite

Amblygonite and Lazulite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Not Available
1.2 Pleochroism
weak to none
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas 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
1.5 Refractive Index
1.578-1.646
1.604-1.646
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Triclinic
monoclinic
1.8 Birefringence
0.020-0.030
0.031-0.036
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Amblygonite and Lazulite Optic Character

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

Similar to their colors, Amblygonite and Lazulite 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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