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Gypsum
Gypsum

Prasiolite
Prasiolite



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Gypsum
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Prasiolite

Gypsum and Prasiolite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Silky, Pearly, Waxy
None
0.01
Transparent, Translucent
1.521-1.531
-
monoclinic
0.010
Transparent
 
Vitreous
Very weak: light green pale greenWalter Schumann
0.01
Transparent, Translucent
1.544-1.553
-
Trigonal
0.009
Transparent

Gypsum and Prasiolite Optic Character

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

Gypsum and Prasiolite Transparency

Similar to their colors, Gypsum 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, Gypsum is while Gypsum is in appearance.