Smoky Quartz and Mellite Optical Properties

Smoky Quartz

Mellite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

None

Weak: yellowish brown yellowAnthony et al

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.544-1.5531.509-1.541

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Hexagonal

Not Available

1.8 Birefringence

0.0090.030

0 0.296

1.9 Clarity

Opaque

TransparentUlrich Henn and Claudio C. Milisenda

Smoky Quartz and Mellite Optic Character

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

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Smoky Quartz and Mellite Transparency

Similar to their colors, Smoky Quartz 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, Smoky Quartz is Translucent, Transparent and Transparent to translucent while Smoky Quartz is Translucent, Transparent and Transparent to translucent in appearance.