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Pollucite
Pollucite

Opal
Opal



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Pollucite
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Opal

Pollucite and Opal Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Pearly
1.2 Pleochroism
Not Available
None
1.3 Dispersion
0.01None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.517-1.5251.37-1.52
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Isometric
Trigonal
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Pollucite and Opal Optic Character

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

Pollucite and Opal Transparency

Similar to their colors, Pollucite and Opal 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, Pollucite is Translucent and Transparent while Pollucite is Translucent and Transparent in appearance.