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Prehnite
Prehnite

Phosphophyllite
Phosphophyllite



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Prehnite
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Phosphophyllite

Prehnite and Phosphophyllite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
AbsentWalter Schumann
NilArthur Thomas
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.611-1.6731.595-1.621
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Not Available
1.8 Birefringence
0.021-0.0330.021
Achroite
0 0.296
1.9 Clarity
TranslucentHerve Nicolas Lazzarelli
TransparentUlrich Henn and Claudio C. Milisenda

Prehnite and Phosphophyllite Optic Character

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

Prehnite and Phosphophyllite Transparency

Similar to their colors, Prehnite and Phosphophyllite 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, Prehnite is Translucent while Prehnite is Translucent in appearance.