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Whitlockite
Whitlockite

Sellaite
Sellaite



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Whitlockite
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Sellaite

Whitlockite and Sellaite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

-
-

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

-99991.378-1.390
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
tetragonal

Birefringence

-99990.012
0 0.296
👆🏻

Clarity

Transparent
Transparent

Whitlockite and Sellaite Optic Character

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

Whitlockite and Sellaite Transparency

Similar to their colors, Whitlockite and Sellaite 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, Whitlockite is Transparent while Whitlockite is Transparent in appearance.