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Prasiolite
Prasiolite

Pumpellyite
Pumpellyite



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Prasiolite
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Pumpellyite

Prasiolite and Pumpellyite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Fibrous
1.2 Pleochroism
Very weak: light green pale greenWalter Schumann
Not Available
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004)
1.5 Refractive Index
1.544-1.5531.674-1.764
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
monoclinic
1.8 Birefringence
0.0090.014-0.016
Achroite
0 0.296
1.9 Clarity
Transparent
OpaqueUlrich Henn and Claudio C. Milisenda

Prasiolite and Pumpellyite Optic Character

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

Similar to their colors, Prasiolite and Pumpellyite 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.