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Zircon
Zircon

Mellite
Mellite



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Zircon
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Mellite

Zircon and Mellite Optical Properties

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1 Optical Properties
1.1 Luster
Adamantine
Vitreous
1.2 Pleochroism
Weak
Weak: yellowish brown yellowAnthony et al
1.3 Dispersion
0.04NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.810-2.0241.509-1.541
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Not Available
1.8 Birefringence
0.047-0.0550.030
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Zircon and Mellite Optic Character

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

Zircon and Mellite Transparency

Similar to their colors, Zircon 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, Zircon is Transparent while Zircon is Transparent in appearance.