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Amblygonite
Amblygonite

Danburite
Danburite



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Amblygonite
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Danburite

Amblygonite and Danburite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Greasy
1.2 Pleochroism
weak to none
Weak: pale yellow yellow
1.3 Dispersion
0.010.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.578-1.6461.627-1.639
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Biaxial/+
1.7 Crystal System
Triclinic
Orthorhombic
1.8 Birefringence
0.020-0.0300.006
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda

Amblygonite and Danburite Optic Character

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

Amblygonite and Danburite Transparency

Similar to their colors, Amblygonite and Danburite 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.