Smoky Quartz and Apophyllite Optical Properties

Smoky Quartz

Apophyllite

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Pearly

1.2 Pleochroism

None

Dichroic (colorless)

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Transparent, Translucent

1.5 Refractive Index

1.544-1.5531.530-1.543

1 3.25

1.6 Optic Character

Not Available

Uniaxial/-

1.7 Crystal System

Hexagonal

tetragonal

1.8 Birefringence

0.0090.000-0.003

0 0.296

1.9 Clarity

Opaque

Transparent

Smoky Quartz and Apophyllite Optic Character

Smoky Quartz and Apophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Smoky Quartz and Apophyllite 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 Apophyllite 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. Apophyllite has Uniaxial/- character.

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Smoky Quartz and Apophyllite Transparency

Similar to their colors, Smoky Quartz and Apophyllite 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.