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Goethite
Goethite

Prasiolite
Prasiolite



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Goethite and Prasiolite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Vitreous
1.2 Pleochroism
VisibleArthur Thomas
Very weak: light green pale greenWalter Schumann
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.01
Rank: 27 (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemstones (2009)
Transparent, Translucent
1.5 Refractive Index
2.26-2.398
1.544-1.553
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Trigonal
1.8 Birefringence
0.138
0.009
1.9 Clarity
Gemstones (2009)
Transparent

Goethite and Prasiolite Optic Character

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

Similar to their colors, Goethite and Prasiolite 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.