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Prasiolite
Prasiolite

Andalusite
Andalusite



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Prasiolite
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Andalusite

Prasiolite and Andalusite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Greasy
1.2 Pleochroism
Very weak: light green pale greenWalter Schumann
strongly trichroic
1.3 Dispersion
Albite Optical ..
0.01
Rank: 27 (Overall)
0.02
Rank: 23 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent
Transparent, Translucent
1.5 Refractive Index
1.544-1.553
1.627-1.650
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.009
0.009-0.010
1.9 Clarity
Transparent
Transparent

Prasiolite and Andalusite Optic Character

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

Prasiolite and Andalusite Transparency

Similar to their colors, Prasiolite and Andalusite 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, Prasiolite is Translucent and Transparent while Prasiolite is Translucent and Transparent in appearance.

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