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Goethite
Goethite

Kyanite
Kyanite



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Goethite
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Kyanite

Goethite and Kyanite Optical Properties

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1 Optical Properties
1.1 Luster
Adamantine
Vitreous, Pearly
1.2 Pleochroism
VisibleArthur Thomas
Trichroic
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemstones (2009)
Not Available
1.5 Refractive Index
2.26-2.3981.71-1.74
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Triclinic
1.8 Birefringence
0.138Not Available
Achroite
0 0.296
1.9 Clarity
Gemstones (2009)
Color grading system

Goethite and Kyanite Optic Character

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

Goethite and Kyanite Transparency

Similar to their colors, Goethite and Kyanite 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, Goethite is Gemstones (2009) while Goethite is Gemstones (2009) in appearance.