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Sphene
Sphene

Pollucite
Pollucite



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Sphene
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Pollucite

Sphene and Pollucite Optical Properties

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Optical Properties

Luster

-
Vitreous, Greasy

Pleochroism

-
-

Dispersion

0.050.01
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.84-2.111.517-1.525
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Isometric

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
Transparent

Sphene and Pollucite Optic Character

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

Sphene and Pollucite Transparency

Similar to their colors, Sphene and Pollucite 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, Sphene is while Sphene is in appearance.