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Pyrope
Pyrope

Mellite
Mellite



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Pyrope
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Mellite

Pyrope and Mellite Optical Properties

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Optical Properties

Luster

Greasy, Vitreous
Vitreous

Pleochroism

None
Weak: yellowish brown yellowAnthony et al

Dispersion

0.020.01
0.005 1
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Transparency

-
-

Refractive Index

1.720-1.7561.509-1.541
1 3.25
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Optic Character

-
-

Crystal System

cubic
-

Birefringence

-99990.030
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda

Pyrope and Mellite Optic Character

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

Pyrope and Mellite Transparency

Similar to their colors, Pyrope 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, Pyrope is while Pyrope is in appearance.