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Whitlockite
Whitlockite

Mellite
Mellite



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Whitlockite
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Mellite

Whitlockite and Mellite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

-
Weak: yellowish brown yellowAnthony et al

Dispersion

0.040.01
0.005 1
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Transparency

Transparent
-

Refractive Index

-99991.509-1.541
1 3.25
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Optic Character

-
-

Crystal System

-
-

Birefringence

-99990.030
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Whitlockite and Mellite Optic Character

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

Similar to their colors, Whitlockite and Mellite 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.