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Amblygonite
Amblygonite

Goethite
Goethite



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Amblygonite
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Goethite

Amblygonite and Goethite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Adamantine
1.2 Pleochroism
weak to none
VisibleArthur Thomas
1.3 Dispersion
Albite Optical ..
0.01
Rank: 26 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004) More from other references
Gemstones (2009)
1.5 Refractive Index
1.578-1.646
2.26-2.398
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Triclinic
Orthorhombic
1.8 Birefringence
0.020-0.030
0.138
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Gemstones (2009)

Amblygonite and Goethite Optic Character

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

Similar to their colors, Amblygonite and Goethite 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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