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Mellite
Mellite

Antimony trioxide
Antimony trioxide



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Mellite
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Antimony trioxide

Mellite and Antimony trioxide Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Weak: yellowish brown yellowAnthony et al
-

Dispersion

0.01-
0.005 1
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Transparency

-
-

Refractive Index

1.509-1.5412.087
1 3.25
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Optic Character

-
-

Crystal System

-
cubic (α)<570 °C

Birefringence

0.030-9999
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Mellite and Antimony trioxide Optic Character

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

Mellite and Antimony trioxide Transparency

Similar to their colors, Mellite and Antimony trioxide 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, Mellite is while Mellite is in appearance.