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Pargasite
Pargasite

Crocoite
Crocoite



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Pargasite
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Crocoite

Pargasite and Crocoite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Adamantine
1.2 Pleochroism
Not Available
Distinctly trichroic
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent
1.5 Refractive Index
1.613-1.6632.31-2.66
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
1.8 Birefringence
0.020Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Pargasite and Crocoite Optic Character

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

Pargasite and Crocoite Transparency

Similar to their colors, Pargasite and Crocoite 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, Pargasite is Transparent while Pargasite is Transparent in appearance.